[Bug 16140] Suspend To RAM/ Resume broken - Radeon KMS on RV250

[Bug 16140] Suspend To RAM/ Resume broken - Radeon KMS on RV250

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=16140


Andrew Morton <akpm@linux-foundation.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |akpm@linux-foundation.org
         AssignedTo|drivers_video-other@kernel- |drivers_video-dri@kernel-bu
                   |bugs.osdl.org               |gs.osdl.org




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[Bug 16140] Suspend To RAM/ Resume broken - Radeon KMS on RV250

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Alex Deucher <alexdeucher@gmail.com> changed:

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                 CC|                            |alexdeucher@gmail.com




--- Comment #3 from Alex Deucher <alexdeucher@gmail.com>  2010-06-23 17:20:22 ---
Does disabling AGP work any better?  boot with radeon.agpmode=-1

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--- Comment #4 from Michael Long <harn-solo@gmx.de>  2010-06-23 21:01:59 ---
Hi,

this does work for me, tested on 2.6.31 and 2.6.34.

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--- Comment #5 from Alex Deucher <alexdeucher@gmail.com>  2010-06-23 21:14:53 ---
I think this should be fixed in:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=10b06122afcc78468bd1d009633cb71e528acdc5

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--- Comment #6 from Alex Deucher <alexdeucher@gmail.com>  2010-06-23 21:17:36 ---
If so, this bug and probably bug 16273 are dupes of bug 15969.

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--- Comment #7 from Michael Long <harn-solo@gmx.de>  2010-06-24 17:19:53 ---
After applying this to 2.6.34, I get this after resume:


Jun 24 18:57:23 T40p kernel: [  110.028385] PM: resume of devices complete
after 1578.173 msecs
Jun 24 18:57:23 T40p kernel: [  110.028598] Restarting tasks ... 
Jun 24 18:57:23 T40p kernel: [  110.031390] BUG: unable to handle kernel paging
request at f8f50000
Jun 24 18:57:23 T40p kernel: [  110.031659] IP: [<f8aad0da>]
radeon_cs_update_pages+0x15a/0x190 [radeon]
Jun 24 18:57:23 T40p kernel: [  110.031955] *pde = 3654f067 *pte = 00000000 
Jun 24 18:57:23 T40p kernel: [  110.032008] Oops: 0002 [#1] PREEMPT 
Jun 24 18:57:23 T40p kernel: [  110.032008] last sysfs file:
/sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/device:00/PNP0C09:00/PNP0C0A:00/power_supply/BAT0/uevent
Jun 24 18:57:23 T40p kernel: [  110.032008] Modules linked in: xts gf128mul
bluetooth autofs4 nfsd lockd auth_rpcgss sunrpc snd_seq snd_usb_audio snd_hwdep
snd_usb_lib snd_rawmidi snd_seq_device dm_crypt dm_mod acpi_cpufreq fuse radeon
ttm snd_intel8x0 ath5k thinkpad_acpi drm_kms_helper snd_ac97_codec mac80211 drm
ath ac97_bus hwmon snd_pcm cfg80211 snd_timer cfbcopyarea snd ehci_hcd
cfbimgblt sr_mod rfkill soundcore uhci_hcd yenta_socket evdev led_class rtc
cdrom pcmcia_core ac battery cfbfillrect snd_page_alloc sg nvram usbcore
thermal processor button
Jun 24 18:57:23 T40p kernel: [  110.032008] 
Jun 24 18:57:23 T40p kernel: [  110.032008] Pid: 1530, comm: X Tainted: G      
 W  2.6.34 #3 2373G1G/2373G1G
Jun 24 18:57:23 T40p kernel: [  110.032008] EIP: 0060:[<f8aad0da>] EFLAGS:
00010202 CPU: 0
Jun 24 18:57:23 T40p kernel: [  110.032008] EIP is at
radeon_cs_update_pages+0x15a/0x190 [radeon]
Jun 24 18:57:23 T40p kernel: [  110.032008] EAX: 00000000 EBX: 00000005 ECX:
000000bc EDX: f735481c
Jun 24 18:57:23 T40p kernel: [  110.032008] ESI: f63bb000 EDI: f8f50000 EBP:
ee4b43c0 ESP: f6207d0c
Jun 24 18:57:23 T40p kernel: [  110.032008]  DS: 007b ES: 007b FS: 0000 GS:
0033 SS: 0068
Jun 24 18:57:23 T40p kernel: [  110.032008] Process X (pid: 1530, ti=f6206000
task=f64bb900 task.ti=f6206000)
Jun 24 18:57:23 T40p kernel: [  110.032008] Stack:
Jun 24 18:57:23 T40p kernel: [  110.032008]  00000000 00000001 000002f0
f6207da0 ee4b43c0 f6207de4 00000000 f8ab720d
Jun 24 18:57:23 T40p kernel: [  110.032008] <0> f73543f4 f8a97000 00000001
f8985a53 00000000 00000202 00000000 f6207de4
Jun 24 18:57:23 T40p kernel: [  110.032008] <0> f63b8000 f7354000 f7355574
f8ab7555 00000001 f36bf814 f89868a4 00000001
Jun 24 18:57:23 T40p kernel: [  110.032008] Call Trace:
Jun 24 18:57:23 T40p kernel: [  110.032008]  [<f8ab720d>] ?
r100_cs_packet_parse+0x5d/0x1d0 [radeon]
Jun 24 18:57:23 T40p kernel: [  110.032008]  [<f8a97000>] ?
radeon_bo_move+0x0/0x330 [radeon]
Jun 24 18:57:23 T40p kernel: [  110.032008]  [<f8985a53>] ?
ttm_bo_handle_move_mem+0x263/0x330 [ttm]
Jun 24 18:57:23 T40p kernel: [  110.032008]  [<f8ab7555>] ?
r100_cs_parse+0x35/0x680 [radeon]
Jun 24 18:57:23 T40p kernel: [  110.032008]  [<f89868a4>] ?
ttm_bo_move_buffer+0x114/0x140 [ttm]
Jun 24 18:57:23 T40p kernel: [  110.032008]  [<f898695d>] ?
ttm_bo_validate+0x8d/0x110 [ttm]
Jun 24 18:57:23 T40p kernel: [  110.032008]  [<f8a982b5>] ?
radeon_bo_list_validate+0x55/0x90 [radeon]
Jun 24 18:57:23 T40p kernel: [  110.032008]  [<f8aacea1>] ?
radeon_cs_ioctl+0x111/0x1f0 [radeon]
Jun 24 18:57:23 T40p kernel: [  110.032008]  [<f83d589b>] ?
drm_ioctl+0x14b/0x390 [drm]
Jun 24 18:57:23 T40p kernel: [  110.032008]  [<f8aacd90>] ?
radeon_cs_ioctl+0x0/0x1f0 [radeon]
Jun 24 18:57:23 T40p kernel: [  110.032008]  [<c100a2fb>] ?
restore_i387_fxsave+0x6b/0x80
Jun 24 18:57:23 T40p kernel: [  110.032008]  [<f83d5750>] ? drm_ioctl+0x0/0x390
[drm]
Jun 24 18:57:23 T40p kernel: [  110.032008]  [<c10a50db>] ? vfs_ioctl+0x2b/0xb0
Jun 24 18:57:23 T40p kernel: [  110.032008]  [<c10a5959>] ?
do_vfs_ioctl+0x79/0x600
Jun 24 18:57:23 T40p kernel: [  110.032008]  [<c10438bd>] ?
__remove_hrtimer+0x2d/0x90
Jun 24 18:57:23 T40p kernel: [  110.032008]  [<c102ec74>] ?
do_setitimer+0x154/0x1a0
Jun 24 18:57:23 T40p kernel: [  110.032008]  [<c102ed09>] ?
sys_setitimer+0x49/0xb0
Jun 24 18:57:23 T40p kernel: [  110.032008]  [<c10a5f1d>] ? sys_ioctl+0x3d/0x70
Jun 24 18:57:23 T40p kernel: [  110.032008]  [<c1002c50>] ?
sysenter_do_call+0x12/0x26
Jun 24 18:57:23 T40p kernel: [  110.032008] Code: ff ff 89 44 24 08 e9 63 ff ff
ff f7 c7 01 00 00 00 75 1f f7 c7 02 00 00 00 75 30 f7 c7 04 00 00 00 75 19 89
c1 83 e0 03 c1 e9 02 <f3> a5 e9 76 ff ff ff 0f b6 16 48 46 88 17 47 eb d7 8b 16
83 e8 
Jun 24 18:57:23 T40p kernel: [  110.032008] EIP: [<f8aad0da>]
radeon_cs_update_pages+0x15a/0x190 [radeon] SS:ESP 0068:f6207d0c
Jun 24 18:57:23 T40p kernel: [  110.032008] CR2: 00000000f8f50000
Jun 24 18:57:23 T40p kernel: [  110.032008] ---[ end trace 38fee5bfe123df75
]---
Jun 24 18:57:23 T40p kernel: [  110.070427] done.
Jun 24 18:57:23 T40p kernel: [  110.155076] [drm:drm_release] *ERROR* Device
busy: 1

Kernel 2.6.35-rc3, which has those patches already applied resumes with black
screen, can't do anything else except triggering SysRq.

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[Bug 16140] Suspend To RAM/ Resume broken - Radeon KMS on RV250

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Sedat Dilek <sedat.dilek@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |sedat.dilek@gmail.com




--- Comment #8 from Sedat Dilek <sedat.dilek@gmail.com>  2010-08-13 09:27:10 ---
On a T40p with RV250 I have the same issues here with 2.6.35-git12 Linux
kernel:

[drm:radeon_ib_schedule] *ERROR* radeon: couldn't schedule IB(0).
[drm:radeon_cs_ioctl] *ERROR* Faild to schedule IB !

This happens after I force a suspend via:

   # /usr/sbin/pm-suspend

- Sedat -

--- Comment #9 from Sedat Dilek <sedat.dilek@gmail.com>  2010-08-13 09:35:01 ---
Created an attachment (id=27429)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=27429)
lspci output for 2.6.35-git12 kernel

--- Comment #10 from Sedat Dilek <sedat.dilek@gmail.com>  2010-08-13 09:43:20 ---
Created an attachment (id=27430)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=27430)
dmesg for 2.6.35-git12 kernel

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[Bug 16140] Suspend To RAM/ Resume broken - Radeon KMS on RV250

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--- Comment #11 from Sedat Dilek <sedat.dilek@gmail.com>  2010-08-13 09:48:10 ---
Created an attachment (id=27431)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=27431)
Output of 'LIBGL_VERBOSE=debug glxinfo 2>/dev/null > glxinfo.txt'

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[Bug 16140] Suspend To RAM/ Resume broken - Radeon KMS on RV250

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--- Comment #12 from Sedat Dilek <sedat.dilek@gmail.com>  2010-08-28 12:34:49 ---
I tested again on 2.6.36-rc2-git4 plus pulled in drm-fixes from Dave's drm-2.6
tree.
The problem still remains.

Booting with "radeon.agpmode=-1" make a 'pm-suspend' sucessful.

I will add the video-bios dump if this helps.

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--- Comment #13 from Sedat Dilek <sedat.dilek@gmail.com>  2010-08-28 12:35:59 ---
Created an attachment (id=28161)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=28161)
Video-BIOS dump of RV250 in a IBM T40p

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--- Comment #14 from Sedat Dilek <sedat.dilek@gmail.com>  2010-08-28 12:43:26 ---
How to dump video-bios (here on 2.6.36 upstream-kernel)?

# lspci | grep "VGA compatible controller"
01:00.0 VGA compatible controller: ATI Technologies Inc Radeon RV250 [Mobility
FireGL 9000] (rev 02)

# find /sys/ -name rom | grep 01:00.0
/sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/rom

# echo 1 > /sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/rom

# cat /sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/rom >
/tmp/vbios_rv250.bin

# echo 0 > /sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/rom

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--- Comment #15 from Sedat Dilek <sedat.dilek@gmail.com>  2010-09-17 11:30:29 ---
I made a debug-try with 2.6.36-rc4-git3 + (radeon) backlight-type patches
[1.2]:

Booted with radeon.modeset=1 and drm.debug=15.
Logs attached.

- Sedat -

[1] https://patchwork.kernel.org/patch/163971/
[2] https://patchwork.kernel.org/patch/182352/

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--- Comment #16 from Sedat Dilek <sedat.dilek@gmail.com>  2010-09-17 11:34:47 ---
Created an attachment (id=30322)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=30322)
2.6.36-rc4-git3 kern.log (pm-suspend + pm-resume)

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--- Comment #17 from Sedat Dilek <sedat.dilek@gmail.com>  2010-09-17 11:35:23 ---
Created an attachment (id=30332)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=30332)
2.6.36-rc4-git3 debug (pm-suspend + pm-resume)

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--- Comment #18 from Sedat Dilek <sedat.dilek@gmail.com>  2010-09-17 11:36:18 ---
Created an attachment (id=30342)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=30342)
2.6.36-rc4-git3 syslog (pm-suspend + pm-resume)

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Michael Long <harn-solo@gmx.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Kernel Version|2.6.29 - 2.6.35-rc2         |2.6.29 - 2.6.36-rc4-git3




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Rafael J. Wysocki <rjw@sisk.pl> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |rjw@sisk.pl
             Blocks|                            |15310
         Regression|No                          |Yes




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Florian Mickler <florian@mickler.org> changed:

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Florian Mickler <florian@mickler.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #30322|text/plain                  |application/octet-stream
          mime type|                            |




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Florian Mickler <florian@mickler.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #30342|text/plain                  |application/octet-stream
          mime type|                            |




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Florian Mickler <florian@mickler.org> changed:

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----------------------------------------------------------------------------
  Attachment #30332|text/plain                  |application/octet-stream
          mime type|                            |




--- Comment #19 from Florian Mickler <florian@mickler.org>  2010-10-07 21:32:15 ---
(From update of attachment 30332)
bit late over here... turns out this was �7zXZ�...

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--- Comment #20 from Sedat Dilek <sedat.dilek@gmail.com>  2010-10-07 21:38:46 ---
You can't read?
It was done with xz-utils from official Debian/sid.
Shall I attach in another archive-format?

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--- Comment #21 from Florian Mickler <florian@mickler.org>  2010-10-07 22:31:27 ---
Created an attachment (id=32762)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=32762)
debug patch to see where we fail to set up the ring

You have this in you kern.log file:
[drm] radeon: ring at 0x00000000D0000000

which doesnt't look so good. 
>From there on it goes bad:

Sep 17 13:12:12 tbox kernel: [  381.304184] [drm:r100_ring_test] *ERROR*
radeon: ring test failed (sracth(0x15E4)=0xCAFEDEAD)
Sep 17 13:12:12 tbox kernel: [  381.304187] [drm:r100_cp_init] *ERROR* radeon:
cp isn't working (-22).
Sep 17 13:12:12 tbox kernel: [  381.304191] radeon 0000:01:00.0: failled
initializing CP (-22).

which explains the 
"[drm:radeon_ib_schedule] *ERROR* radeon: couldn't schedule IB(0)." message. 

cp.ready is false, due to r100_cp_init failing.

Let's see if we can narrow down what fails. Can you apply this patch and post
the resulting kern.log?

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--- Comment #22 from Florian Mickler <florian@mickler.org>  2010-10-07 22:32:46 ---
(In reply to comment #20)
> You can't read?

I wondered that myself...

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--- Comment #23 from Sedat Dilek <sedat.dilek@gmail.com>  2010-10-08 09:00:24 ---
Thanks Florian for taking care of this BR.

I applied your patch from above against 2.6.36-rc7 and will attach the logs.

Here the legend to my logs (messages, kern.log and debug):

1: 2010-10-08 10:35: boot-up into runlevel-3
2: 2010-10-08 10:36: startx
3: 2010-10-08 10:37: pm-suspend
4. 2010-10-08 10:38: power-on/pm-resume
5. 2010-10-08 10:39: poweroff

EXAMPLE:
So "3_debug.txt" covers all logs written to /var/log/debug after running
"pm-suspend" command.

I hope this helps narrowing down the problem.

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--- Comment #24 from Sedat Dilek <sedat.dilek@gmail.com>  2010-10-08 09:01:37 ---
Created an attachment (id=32812)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=32812)
Tarball of logs for Florian Mickler

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--- Comment #25 from Sedat Dilek <sedat.dilek@gmail.com>  2010-10-08 09:02:45 ---
Created an attachment (id=32822)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=32822)
Checksum for tarball of logs for Florian Mickler

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--- Comment #26 from Sedat Dilek <sedat.dilek@gmail.com>  2010-10-08 11:52:42 ---
Created an attachment (id=32852)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=32852)
Some more debugging output in r100_cp_init() + Fix typos in r100_ring_test()

With attached patch, I get now the below warning, looks more like an ACPI
issue?

- Sedat -

[ /var/log/kern.log ]
...
Oct  8 13:38:09 tbox kernel: [   94.308199] [drm:r100_ring_test] *ERROR*
radeon: ring test failed (scratch(0x15E4)=0xCAFEDEAD)
Oct  8 13:38:09 tbox kernel: [   94.308202] ------------[ cut here
]------------
Oct  8 13:38:09 tbox kernel: [   94.308236] WARNING: at
/home/sd/src/linux-2.6/linux-2.6.36-rc7/debian/build/source_i386_none/drivers/gpu/drm/radeon/r100.c:1028
r100_cp_init+0x5b6/0x5db [radeon]()
Oct  8 13:38:09 tbox kernel: [   94.308240] Hardware name: 2374SG6
Oct  8 13:38:09 tbox kernel: [   94.308242] Modules linked in: sco bnep rfcomm
l2cap bluetooth aes_i586 acpi_cpufreq mperf aes_generic cpufreq_stats
cpufreq_userspace cpufreq_conservative ppdev cpufreq_powersave lp dm_crypt
binfmt_misc ext4 snd_intel8x0m snd_intel8x0 snd_ac97_codec jbd2 ac97_bus crc16
snd_pcm_oss radeon snd_mixer_oss thinkpad_acpi snd_pcm arc4 snd_seq_midi ecb
ath5k snd_rawmidi snd_seq_midi_event mac80211 ttm snd_seq ath drm_kms_helper
pcmcia drm cfg80211 i2c_algo_bit rfkill i2c_i801 nsc_ircc yenta_socket i2c_core
pcmcia_rsrc snd_timer snd_seq_device joydev pcmcia_core tpm_tis irda shpchp snd
tpm parport_pc crc_ccitt snd_page_alloc pci_hotplug soundcore serio_raw
led_class psmouse tpm_bios video nvram processor battery ac parport rng_core
pcspkr output button evdev fuse autofs4 ext3 jbd mbcache dm_mod usbhid hid sg
sr_mod sd_mod crc_t10dif cdrom ata_generic ata_piix libata uhci_hcd ehci_hcd
usbcore scsi_mod thermal e1000 floppy thermal_sys nls_base [last unloaded:
scsi_wait_scan]
Oct  8 13:38:09 tbox kernel: [   94.308314] Pid: 2052, comm: kworker/u:5 Not
tainted 2.6.36-rc7-686 #1
Oct  8 13:38:09 tbox kernel: [   94.308317] Call Trace:
Oct  8 13:38:09 tbox kernel: [   94.308327]  [<c102eff1>] ?
warn_slowpath_common+0x6a/0x7b
Oct  8 13:38:09 tbox kernel: [   94.308345]  [<f8f5aceb>] ?
r100_cp_init+0x5b6/0x5db [radeon]
Oct  8 13:38:09 tbox kernel: [   94.308349]  [<c102f00f>] ?
warn_slowpath_null+0xd/0x10
Oct  8 13:38:09 tbox kernel: [   94.308369]  [<f8f5aceb>] ?
r100_cp_init+0x5b6/0x5db [radeon]
Oct  8 13:38:09 tbox kernel: [   94.308388]  [<f8f5ba4b>] ?
r100_startup+0x1f8/0x246 [radeon]
Oct  8 13:38:09 tbox kernel: [   94.308403]  [<f8f33378>] ?
radeon_resume_kms+0x77/0xe6 [radeon]
Oct  8 13:38:09 tbox kernel: [   94.308407]  [<c114bcf5>] ?
pci_legacy_resume+0x23/0x2c
Oct  8 13:38:09 tbox kernel: [   94.308411]  [<c114bdab>] ?
pci_pm_resume+0x0/0x60
Oct  8 13:38:09 tbox kernel: [   94.308418]  [<c11c15b5>] ? pm_op+0x8f/0x13f
Oct  8 13:38:09 tbox kernel: [   94.308422]  [<c11c19aa>] ?
device_resume+0x3a/0xb3
Oct  8 13:38:09 tbox kernel: [   94.308425]  [<c11c1cfd>] ?
async_resume+0x13/0x33
Oct  8 13:38:09 tbox kernel: [   94.308430]  [<c1048df9>] ?
async_run_entry_fn+0x8b/0x121
Oct  8 13:38:09 tbox kernel: [   94.308436]  [<c103fe46>] ?
process_one_work+0x181/0x25e
Oct  8 13:38:09 tbox kernel: [   94.308440]  [<c1048d6e>] ?
async_run_entry_fn+0x0/0x121
Oct  8 13:38:09 tbox kernel: [   94.308444]  [<c1041319>] ?
worker_thread+0xf3/0x1ed
Oct  8 13:38:09 tbox kernel: [   94.308448]  [<c1041226>] ?
worker_thread+0x0/0x1ed
Oct  8 13:38:09 tbox kernel: [   94.308452]  [<c1043926>] ? kthread+0x63/0x68
Oct  8 13:38:09 tbox kernel: [   94.308455]  [<c10438c3>] ? kthread+0x0/0x68
Oct  8 13:38:09 tbox kernel: [   94.308461]  [<c100357e>] ?
kernel_thread_helper+0x6/0x10
Oct  8 13:38:09 tbox kernel: [   94.308464] ---[ end trace a248808f0af92caf
]---
Oct  8 13:38:09 tbox kernel: [   94.308467] [drm:r100_cp_init] *ERROR* radeon:
cp isn't working (-22).
Oct  8 13:38:09 tbox kernel: [   94.308470] radeon 0000:01:00.0: failled
initializing CP (-22).

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--- Comment #27 from Sedat Dilek <sedat.dilek@gmail.com>  2010-10-08 11:56:53 ---
Created an attachment (id=32862)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=32862)
kern.log.xz

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--- Comment #28 from Sedat Dilek <sedat.dilek@gmail.com>  2010-10-08 11:57:56 ---
Created an attachment (id=32872)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=32872)
debug.xz

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--- Comment #29 from Sedat Dilek <sedat.dilek@gmail.com>  2010-10-08 11:59:54 ---
Created an attachment (id=32882)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=32882)
messages.xz

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--- Comment #30 from Florian Mickler <florian@mickler.org>  2010-10-08 17:48:12 ---
No,that's one of the warnings I put in place with the debug patch. 

It is definitely the radeon driver which is failing. Maybe because of some
other failure in the system but I guess there is a bug somewhere in the suspend
or resume phase of the radeon driver. 

I'm not really familiar with the radeon driver, but will look into it for some
obvious or easy to spot errors.

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--- Comment #31 from Florian Mickler <florian@mickler.org>  2010-10-08 17:52:06 ---
Oh, and please dont fix those typos! They are the only way to distinguish which
code path is actually running...
 you just threw me off there for a while wondering why it's not the typoed
scratch message...

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--- Comment #32 from Sedat Dilek <sedat.dilek@gmail.com>  2010-10-10 13:40:58 ---
(Patch see https://bugzilla.kernel.org/show_bug.cgi?id=16140#c26)

With applying my patch from above, it's this section (Line #1028 and following)
from r100_cp_init() doing the problem:

 940 int r100_cp_init(struct radeon_device *rdev, unsigned ring_size)
...
1026         radeon_ring_start(rdev);
1027         r = radeon_ring_test(rdev);
1028         if (r) {
1029                 DRM_ERROR("radeon: cp isn't working (%d).\n", r);
1030                 return r;
1031         }
1032         rdev->cp.ready = true;
1033         return 0;
1034 }
...

Replacing "if (r) {" with "if (WARN_ON(r)) {" shows the above Call-trace.
I looked into r600.c source-code and put "rdev->cp.ready = true;" before Line
"r = radeon_ring_test(rdev);", not helping.

Again inspired from r600.c, I put Line #966 "r100_cp_load_microcode(rdev);"
after "r = radeon_ring_init(rdev, ring_size);", this resulted in a
not-so-garbled screen, after hanging:
pm-resume in X -> switching to vt-1 -> killing X -> restarting startx

This is doing no harm, see my logs.
-        DRM_ERROR("radeon: ring test failed (sracth(0x%04X)=0x%08X)\n",
+        DRM_ERROR("radeon: ring test failed (scratch(0x%04X)=0x%08X)\n",

I am not sure what you mean with "radeon driver": the one in the kernel or the
DDX (xf86-video-ati).

One NOTE:
In Line #3728 there is a commented "r100_gpu_init(rdev);", it is nowhere
"defined". I see in r600.c a *_gpu_init() and a *_cp_start() in case of
resuming. Just a hint, if you wanna compare or dig into it.

IIRC it would make sense to interprete correctly the Call-trace, I am not that
familiar with "the internals".

Sorry, I don't wanna experiment with older Linux-Kernels as my graphics driver
stack is mostly latest-stable or from GIT, not sure what will happen.

[1]
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=blob;f=drivers/gpu/drm/radeon/r100.c;h=e151f16a8f86d73090ec6a4eb17a3590661868db;hb=HEAD#l1028
[2]
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=blob;f=drivers/gpu/drm/radeon/r100.c;h=e151f16a8f86d73090ec6a4eb17a3590661868db;hb=HEAD#l966
[3]
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=blob;f=drivers/gpu/drm/radeon/r100.c;h=e151f16a8f86d73090ec6a4eb17a3590661868db;hb=HEAD#l3728

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--- Comment #33 from Florian Mickler <florian@mickler.org>  2010-10-10 23:15:54 ---
Hi!

I did find a rv280 card. On that card, the screen is garbled after resume, but
the ring test doesn't fail. It is using the same code-paths as far as I see. 

So we can probably conclude: 
1. garbled screen and the ring setup failure are independent failures. 
2. the ring setup failure is something specific to your card / or chipset.

Do you see differences in lspci -vv output before and after suspend? 

(In reply to comment #32)
> (Patch see https://bugzilla.kernel.org/show_bug.cgi?id=16140#c26)
> 
> With applying my patch from above, it's this section (Line #1028 and following)
> from r100_cp_init() doing the problem:
> 
>  940 int r100_cp_init(struct radeon_device *rdev, unsigned ring_size)
> ...
> 1026         radeon_ring_start(rdev);
> 1027         r = radeon_ring_test(rdev);
> 1028         if (r) {
> 1029                 DRM_ERROR("radeon: cp isn't working (%d).\n", r);
> 1030                 return r;
> 1031         }
> 1032         rdev->cp.ready = true;
> 1033         return 0;
> 1034 }
> ...
> 
> Replacing "if (r) {" with "if (WARN_ON(r)) {" shows the above Call-trace.

Yes. This is also seen by the "radeon: cp isn't working (-22)." 
Line in your dmesg. But of course the callstack is handy to verify we are
looking at the right code.
I didn't put a WARN there, because we already knew it failed. 
I wondered if some tests without error-messages failed and put the WARN's
there. 
But in retrospect we would have seen that, because the above error message
would have not been preceded by the ring-test error message.

> I looked into r600.c source-code and put "rdev->cp.ready = true;" before Line
> "r = radeon_ring_test(rdev);", not helping.

If you are interested how the driver works, have a look at
http://www.botchco.com/agd5f/?p=50

The "ring" is a buffer where the driver writes commands and the gpu reads those
commands and executes them. It's a ring buffer.
http://en.wikipedia.org/wiki/Circular_buffer

If you set cp.ready and the hardware isn't really ready, that won't help. 

The ring test works like so: The driver writes a value (0xCAFEDEAD) into the
scratch-register and instructs the gpu via the ringbuffer to overwrite it with
"0xDEADBEEF". Then the driver check's if the gpu does it. And if after N
udelays(1)  the gpu did not write the expected value into that register, the
test fails.

But of course, we are left to wonder as to why.

> Again inspired from r600.c, I put Line #966 "r100_cp_load_microcode(rdev);"
> after "r = radeon_ring_init(rdev, ring_size);", this resulted in a
> not-so-garbled screen, after hanging:
> pm-resume in X -> switching to vt-1 -> killing X -> restarting startx

That's interesting. Can you elaborate on the hanging?

> 
> This is doing no harm, see my logs.
> -        DRM_ERROR("radeon: ring test failed (sracth(0x%04X)=0x%08X)\n",
> +        DRM_ERROR("radeon: ring test failed (scratch(0x%04X)=0x%08X)\n",

True, but it is inconvenient. If you 'grep -r' on that error message you only
get the r100 one. With the typo corrected, you get both, the r100 and the r600
one. I agree, not a big deal, but...

> I am not sure what you mean with "radeon driver": the one in the kernel or the
> DDX (xf86-video-ati).

Always the kernel one, at the moment.

> 
> One NOTE:
> In Line #3728 there is a commented "r100_gpu_init(rdev);", it is nowhere
> "defined". I see in r600.c a *_gpu_init() and a *_cp_start() in case of
> resuming. Just a hint, if you wanna compare or dig into it.
> 

Yes. I wondered about that too. 'git-blame' shows it is a  left over from:

commit 90aca4d2740255bd130ea71a91530b9920c70abe
Author: Jerome Glisse <jglisse@redhat.com>
Date:   Tue Mar 9 14:45:12 2010 +0000

    drm/radeon/kms: simplify & improve GPU reset V2

...

> IIRC it would make sense to interprete correctly the Call-trace, I am not that
> familiar with "the internals".

The call-trace is not complicated. The topmost function is the function that is
currently executing. The second entry is the function it will return to. The
third function is the function the second function will return to. and so on. 

see: http://en.wikipedia.org/wiki/Call_stack

I don't know about the item 1 to 3 in that trace. But I guess they are just
artifacts of the WARN_ON macro. 

If you look into the code, you see that the call trace is to be expected. 
What has to be considered bad, is that the ring-test fails because the gpu
doesn't process the ringbuffer in time. 


In comment #12 you said, that turning off agp would fix the suspend issue?
Which one was that? The ring-test error message, or the garbled screen or both?

In my setup (rv280) it only worked once out of ten times. First time, it came
back without garbled screen, but all subsequent suspend/resumes did garble the
screen. 


On that screen garble I have a few thoughts. It is somewhat periodic and always
follows a pattern for me. I can clear the corruption by changing consoles for
example. Then it always scribbles in a predetermined pattern on the framebuffer
where it stays (overwriting itself with a high frequency), till I change
consoles.  Same for you?

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--- Comment #34 from Sedat Dilek <sedat.dilek@gmail.com>  2010-10-29 18:00:36 ---
Sorry, but I don't think I will follow this BR for a while.
Currently, busy with other stuff.

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--- Comment #35 from bjaglin <bjaglin@free.fr>  2010-11-16 22:55:44 ---
I have a RV250 (T40p, same hardware than above) and I have been experiencing
the same problems as Sedat for several months (on resume, garbled screen in X
AND the ring setup failure). I still can't resume properly on 2.6.32-rc7. To
follow up on the previous message: turning off AGP solve both problems,
completely. Can I do something to help?

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Cactus <cactus@archlinux.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |cactus@archlinux.fr




--- Comment #36 from Cactus <cactus@archlinux.fr>  2010-12-04 16:22:30 ---
I have the same problem, since several months.
I disabled KMS with radeon.modeset=0, and all worked fine, until today.
But the last upgrades (I use archlinux) make it not working now.
First, X didn't start, so I enabled KMS, but I lost the suspend-to-ram (black
screen at resume).
I tried radeon.agpmode=-1, but it doesn't work.

What can I do ?

I really need s2ram for my laptop (too old, booting takes several minutes !)

Thanks for your help.

Cactus.

System Informations : 
kernel 2.6.36.1-3, xf86-video-ati 6.13.2-2, ati-dri 7.9-1, libgl 7.9-1, mesa
7.9-1.
Older versions (no problem with radeon.modeset=0): kernel 2.6.35.8-1,
xf86-video-ati 6.13.2-1, ati-dri 7.8.2-3, libgl 7.8.2-3, mesa 7.8.2-3

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Keivan Moradi <k.moradi@gmail.com> changed:

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----------------------------------------------------------------------------
                 CC|                            |k.moradi@gmail.com




--- Comment #37 from Keivan Moradi <k.moradi@gmail.com>  2010-12-13 05:27:18 ---
I've followed gentoo documentation to enable standby on my workstation. When I
run the command "hibernate-ram" in the console, system turns off but sytem
freeze on resume from Suspend/Standby/Sleep. (monitor show a vertical rainbow)
+ (alt + sysrq + b cannot reboot the system).

hardware:dual xeon motherboard with only one 5540 cpu + very old ps2 mouse and
keyboard + old x300SE (RV370) ati vga
kernel: gentoo-sources (2.6.34 r12) + original kernel drivers.

When I've reconfigured the kernel to do not use ati drivers (I used vesa
drivers instead), suspend work without problem. Now I'm sure there is a bug in
the radeon drivers.

on my next experiment I've configured the kernel to use only ati driver under
direct rendering manager (ie I've removed the ati framebuffer driver) -> this
time system suspends and on resume there is color page with a blinking cursor
but there is no working console. alt + sysrq + b can reboot my box.

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Jérôme Glisse <glisse@freedesktop.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |glisse@freedesktop.org
            Summary|Suspend To RAM/ Resume      |[RADEON:KMS:RV250:RESUME]
                   |broken - Radeon KMS on      |suspend to RAM resume
                   |RV250                       |broken




--- Comment #38 from Jérôme Glisse <glisse@freedesktop.org>  2011-03-07 18:49:37 ---
Michael do you still have this issue with more recent kernel ?

Others people having issue, please open your own bug, before try the lastest
kernel to check if the issue is resolved for you.

Note also that kernel framebuffer driver is outdated and shouldn't be used, we
only actively support KMS for radeon.

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--- Comment #39 from Sedat Dilek <sedat.dilek@gmail.com>  2011-03-07 20:09:43 ---
I have tested with linux-next (next-20110307):

1. KMS enabled = NOPE
2. KMS enabled + radeon.agpmode=-1 = OK
   (dmesg: [drm] Forcing AGP to PCI mode)

My Xorg stack changed to libdrm-2.4.23, mesa-7.10.1, ddx-1:6.14.0 and
xserver-1.10-rc3.

Killing xserver from runlevel-3 several times, does not help, the GPU seems to
hang.
Still noone told me after attaching so much informations to this BR how to
force a GPU reset in rl-3.
Can you please enlighten me and others?

- Sedat -

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--- Comment #40 from Sedat Dilek <sedat.dilek@gmail.com>  2011-03-07 20:23:45 ---
Just in case it mattersm here my PM userspace:

# dpkg -l | egrep -i 'acpid|pm-utils'
ii  acpid                                                1:2.0.8-2             
             Advanced Configuration and Power Interface event daemon
ii  pm-utils                                             1.4.1-6               
             utilities and scripts for power management

I still do suspend via pm-suspend (pm-utils) command.

- Sedat -

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Michael Long <harn-solo@gmx.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Kernel Version|2.6.29 - 2.6.36-rc4-git3    |2.6.29 -
                   |                            |2.6.38-rc7-00163-gfb62c00




--- Comment #41 from Michael Long <harn-solo@gmx.de>  2011-03-08 18:32:33 ---
Jérôme, unfortunately I can only confirm what Sedat reported previously.
I was testing it with the most recent git-kernel.

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--- Comment #42 from Michael Long <harn-solo@gmx.de>  2011-03-08 18:33:58 ---
Created an attachment (id=50332)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=50332)
Most recent resume trace

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Robert de Rooy <robert.de.rooy@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |robert.de.rooy@gmail.com




--- Comment #43 from Robert de Rooy <robert.de.rooy@gmail.com>  2011-03-22 08:38:35 ---
This same bug is also reported against Fedora;
https://bugzilla.redhat.com/show_bug.cgi?id=531825

There it was determined that it is not necessary to completely disable AGP, but
that dropping from AGP 4X to AGP 1X is sufficient to let the system resume.

In other words, boot with: radeon.agpmode=1

There is though a serious performance penalty with doing so with certain
applications (games) that copy around large textures.

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list@phuk.ath.cx changed:

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----------------------------------------------------------------------------
                 CC|                            |list@phuk.ath.cx

Bryan Raney <braney.bugzilla4kernel@mailnull.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |braney.bugzilla4kernel@mail
                   |                            |null.com




--- Comment #44 from list@phuk.ath.cx  2011-08-27 01:37:28 ---
I'm still seeing this on Ubuntu 11.04 with 2.6.38-11-generic. Any hope that
this might be fixed?

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soren121 <doodle62@gmail.com> changed:

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                 CC|                            |doodle62@gmail.com




--- Comment #45 from soren121 <doodle62@gmail.com>  2012-02-09 04:08:53 ---
No fix in sight, but there is a workaround: set a primary password in the BIOS.
The BIOS will initialize the video card on wake-up and allow Linux to resume
normally. Inconvenient? Yes, but it's better than bottlenecking your already
out-of-date graphics card. I posted this workaround on the Canonical Launchpad
bug report some time ago; I guess it hasn't been shared outside as of yet.

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--- Comment #46 from Paul Bolle <pebolle@tiscali.nl>  2012-02-09 13:54:32 ---
(In reply to comment #45)
> I posted this workaround on the Canonical Launchpad
> bug report some time ago; I guess it hasn't been shared outside as of yet.

Could you add a link to that bug report?

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--- Comment #47 from Paul Bolle <pebolle@tiscali.nl>  2012-02-09 16:12:36 ---
(In reply to comment #45)
> No fix in sight, but there is a workaround: set a primary password in the BIOS.
> The BIOS will initialize the video card on wake-up and allow Linux to resume
> normally.

0) This wasn't on a ThinkPad, was it? Because on a ThinkPad T41 that triggers
issue there's no "primary" BIOS password. Fiddling with other BIOS passwords
doesn't seem to help: they're not even asked on resume.

1) Could you please provide some further details?

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--- Comment #48 from Wirawan Purwanto <wirawan0@gmail.com>  2012-02-09 16:41:59 ---
The trick mentioned in comment #45 applies to Dell Latitude D600 model. Here is
the link to Canonical's bug report:

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/559163

Paul Bolle said correctly that this trick depends on primary BIOS password
being asked upon resuming. It did not work for me on a Dell Inspiron 600m
(which is a "consumer" sister model of D600).

FWIW here are some related bug pages on Ubuntu/Launchpad:

  "resume broken on ATI radeon RV250"
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/557224
  (affecting Thinkpad T41)

  "[Dell Computer Corporation Inspiron 600m] suspend/resume failure"
  https://bugs.launchpad.net/linux/+bug/471872
  (affecting my Dell Inspiron 600m computer)

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--- Comment #49 from Sedat Dilek <sedat.dilek@gmail.com>  2012-11-23 18:33:14 ---
Just FYI: There is now an upstream fix (see [1]).

commit 45171002b01b2e2ec4f991eca81ffd8430fd0aec
"radeon: add AGPMode 1 quirk for RV250"

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commit;h=45171002b01b2e2ec4f991eca81ffd8430fd0aec

- Sedat -

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Alan <alan@lxorguk.ukuu.org.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |alan@lxorguk.ukuu.org.uk
         Resolution|---                         |CODE_FIX

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