[Bug 61941] New: Random GPU lockups/resets on Mobility Radeon HD 3650 with radeon.dpm=1

[Bug 61941] New: Random GPU lockups/resets on Mobility Radeon HD 3650 with radeon.dpm=1

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https://bugzilla.kernel.org/show_bug.cgi?id=61941

            Bug ID: 61941
           Summary: Random GPU lockups/resets on Mobility Radeon HD 3650
                    with radeon.dpm=1
           Product: Drivers
           Version: 2.5
    Kernel Version: >=3.11.0
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri@kernel-bugs.osdl.org
          Reporter: itumaykin@gmail.com
        Regression: No

Created attachment 109311
  --> https://bugzilla.kernel.org/attachment.cgi?id=109311&action=edit
lspci -vvv

Hello.

I have 3.11 kernel with radeon.dpm enabled via kernel boot option. Sometimes
under unknown circumstances my GPU resets. It happens seldom and randomly
during a common desktop workflow: web browsing, document typing, video
playback. No games or video benchmarks or any other GPU-eating stuff.

During such lockup my screen turns black, but backlight is still on. After a
while image reappears, though it is blurry and after 10-15 seconds my screen is
back to normal state completely. Also sometimes after such reset I am able to
continue working, but sometimes screen is stuck with one image that appeared
after screen restoration and I have to reboot machine to fix this.

Everything else seems to work fine during lockups, for example music is playing
without any problems. I can't say for sure, but it looks like this bug happens
more often when some video is played in Firefox. (JIC: I don't have Adobe Flash
installed.)

My OS is Gentoo amd64 with vanilla kernel 3.11.{0,1}. And this happens with
power_dpm_state set to "balanced". I've attached two dmesg outputs after such
lockups.

I do understand that it is probably too vague description to fix this and I am
ready to provide any other additional info.

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[Bug 61941] Random GPU lockups/resets on Mobility Radeon HD 3650 with radeon.dpm=1

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--- Comment #1 from Ilya Tumaykin <itumaykin@gmail.com> ---
Created attachment 109321
  --> https://bugzilla.kernel.org/attachment.cgi?id=109321&action=edit
dmesg after lockup

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[Bug 61941] Random GPU lockups/resets on Mobility Radeon HD 3650 with radeon.dpm=1

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--- Comment #2 from Ilya Tumaykin <itumaykin@gmail.com> ---
Created attachment 109331
  --> https://bugzilla.kernel.org/attachment.cgi?id=109331&action=edit
another dmesg after lockup

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[Bug 61941] Random GPU lockups/resets on Mobility Radeon HD 3650 with radeon.dpm=1

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Alex Deucher <alexdeucher@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |alexdeucher@gmail.com

--- Comment #3 from Alex Deucher <alexdeucher@gmail.com> ---
Do you only get the lockups with dpm enabled?  If so, try disabling certain dpm
features and see if any of them help.  See if you can narrow down which if any
of them help.  E.g.,

diff --git a/drivers/gpu/drm/radeon/rv6xx_dpm.c
b/drivers/gpu/drm/radeon/rv6xx_dpm.c
index 5811d27..13c5267 100644
--- a/drivers/gpu/drm/radeon/rv6xx_dpm.c
+++ b/drivers/gpu/drm/radeon/rv6xx_dpm.c
@@ -1981,10 +1981,10 @@ int rv6xx_dpm_init(struct radeon_device *rdev)
        else
                pi->fb_div_scale = 0;

-       pi->voltage_control =
-               radeon_atom_is_voltage_gpio(rdev, SET_VOLTAGE_TYPE_ASIC_VDDC,
0);
+       pi->voltage_control = false;
+//             radeon_atom_is_voltage_gpio(rdev, SET_VOLTAGE_TYPE_ASIC_VDDC,
0);

-       pi->gfx_clock_gating = true;
+       pi->gfx_clock_gating = false;

        pi->sclk_ss = radeon_atombios_get_asic_ss_info(rdev, &ss,
                                                       ASIC_INTERNAL_ENGINE_SS,
0);
@@ -1993,13 +1993,14 @@ int rv6xx_dpm_init(struct radeon_device *rdev)

        /* Disable sclk ss, causes hangs on a lot of systems */
        pi->sclk_ss = false;
+       pi->mclk_ss = false;

        if (pi->sclk_ss || pi->mclk_ss)
                pi->dynamic_ss = true;
        else
                pi->dynamic_ss = false;

-       pi->dynamic_pcie_gen2 = true;
+       pi->dynamic_pcie_gen2 = false;

        if (pi->gfx_clock_gating &&
            (rdev->pm.int_thermal_type != THERMAL_TYPE_NONE))

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[Bug 61941] Random GPU lockups/resets on Mobility Radeon HD 3650 with radeon.dpm=1

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--- Comment #4 from Ilya Tumaykin <itumaykin@gmail.com> ---
(In reply to Alex Deucher from comment #3)
> Do you only get the lockups with dpm enabled?  If so, try disabling certain
> dpm features and see if any of them help.  See if you can narrow down which
> if any of them help.  E.g.,

So far, yes, it happens only with dpm enabled. I'll try to switch certain
features off and report if this helps somehow.

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[Bug 61941] Random GPU lockups/resets on Mobility Radeon HD 3650 with radeon.dpm=1

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--- Comment #5 from Ilya Tumaykin <itumaykin@gmail.com> ---
Disabling voltage control doesn't help. i.e. I still have this issue after the
following change:

-       pi->voltage_control =
-               radeon_atom_is_voltage_gpio(rdev,
SET_VOLTAGE_TYPE_ASIC_VDDC, 0);
+       pi->voltage_control = false;
+//             radeon_atom_is_voltage_gpio(rdev,
SET_VOLTAGE_TYPE_ASIC_VDDC, 0);

I will try to disable dynamic_pcie_gen2 this time.

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--- Comment #6 from Ilya Tumaykin <itumaykin@gmail.com> ---
Disabling dynamic_pcie_gen2 also doesn't help. Will try mclk_ss next.

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--- Comment #7 from Ilya Tumaykin <itumaykin@gmail.com> ---
mclk_ss doesn't help either. Last option is gfx_clock_gating. Will try it next.

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[Bug 61941] Random GPU lockups/resets on Mobility Radeon HD 3650 with radeon.dpm=1

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--- Comment #8 from Ilya Tumaykin <itumaykin@gmail.com> ---
I've just noticed that after such lockup if I only restart X server without
full reboot of the machine then video playback (mplayer) is unavailable. xvinfo
shows this:

X-Video Extension version 2.2
screen #0
 no adaptors present

Prior to such lockup video playback works flawlessly with the very same
configuration. Not sure if this info is useful somehow. These results obtained
with the latest stable 3.11.6 kernel.

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[Bug 61941] Random GPU lockups/resets on Mobility Radeon HD 3650 with radeon.dpm=1

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--- Comment #9 from Ilya Tumaykin <itumaykin@gmail.com> ---
Changing gfx_clock_gating also doesn't help. There's one more thing though that
I've changed alongside dpm: I've enabled aspm=1 for kernel driver.

I will remove aspm=1 from modprobe.conf so the driver will choose itself
whether it should be on or off. I'll report whether this helps or not.

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[Bug 61941] Random GPU lockups/resets on Mobility Radeon HD 3650 with radeon.dpm=1

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--- Comment #10 from Ilya Tumaykin <itumaykin@gmail.com> ---
I've just had another suck lockup on 3.12 vanilla kernel without specifying
aspm option to the driver. What should I test now?

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--- Comment #11 from Ilya Tumaykin <itumaykin@gmail.com> ---
Recently Phoronix site published a series of Radeon cards tests. Their setup
was kernel 3.12 with dpm enabled, Mesa 10.0 pre-release and Ubuntu 13.10. They
had the same problem as me [0]:

"The Radeon HD 3650 ... was unstable when running the Source Engine tests and
resulted in "GPU lockup CP stall for more than 10000msec" and "*ERROR* radeon:
fence wait failed" errors. With frequent GPU lock-ups, the HD 3650 tests were
abandoned."

[0]:
http://www.phoronix.com/scan.php?page=article&item=amd_gallium3d_tf2css&num=2

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Shawn Starr <shawn.starr@rogers.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |shawn.starr@rogers.com

--- Comment #12 from Shawn Starr <shawn.starr@rogers.com> ---
Ilya,

I have a theory I've been testing and 'so far'. Do you have any CPU frequency
daemons running thermald or have CPUFreq set to a governor other than
performance?

If you set to performance and test do you have GPU resets?

With GLAMOR and no EXA in xorg.conf, I haven't had a reset in two weeks now
with various use, DPM enabled and CPU governor set to performance mode. 

This might be a big stretch but anything is possible in potential triggers.

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--- Comment #13 from Ilya Tumaykin <itumaykin@gmail.com> ---
(In reply to Shawn Starr from comment #12)
Hello, Shawn.

I don't have any such daemon, but my cpufreq governor is set to conservative
both on AC and battery.

Ok, I will try your suggestion, but could you please share what is you theory
about?

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--- Comment #14 from Shawn Starr <shawn.starr@rogers.com> ---
Somehow, when the CPU shifts frequency this is causing voltage changes that are
affecting the GPU's switching DPM power states.

I will be trying this week my old tests with EXA to see if this holds true but
this time keep the cpufreq governor to performance mode only.

I could be grasping at straws but really, nothing would surprise me these days
:)

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--- Comment #15 from Shawn Starr <shawn.starr@rogers.com> ---
My Theory is incorrect, but what is interesting was I could get the GPU to
reset quicker, still, using EXA is unreliable use GLAMOR in your xorg.conf (if
you dont have a newer stack).

This was stable even if its masking the real issue going on.

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--- Comment #16 from Ilya Tumaykin <itumaykin@gmail.com> ---
I've noticed that this bug happens more frequently on my machine while running
Virtualbox. However, it does occur without Virtualbox as well.

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--- Comment #17 from Ilya Tumaykin <itumaykin@gmail.com> ---
Just got another lockup with 3.12.6 kernel.

Ping.

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--- Comment #18 from Ilya Tumaykin <itumaykin@gmail.com> ---
This issue still occurs with 3.12.8 kernel.

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--- Comment #19 from Ilya Tumaykin <itumaykin@gmail.com> ---
Still occurs with 3.13.2 kernel.

Ping.

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--- Comment #20 from Ilya Tumaykin <itumaykin@gmail.com> ---
(In reply to Ilya Tumaykin from comment #19)
Same with 3.13.3.

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Victor Zhang <victzhang@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |victzhang@gmail.com

--- Comment #21 from Victor Zhang <victzhang@gmail.com> ---
I am having exactly the same issue on Ubuntu 13.10 (kernel 3.11.0-15-generic).
My GPU is HD3450 (R620 LE). Apart form the random hang issue, sometimes the
kernel crashes during "modprobe radeon". I have to disable dpm for now.

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--- Comment #22 from Ilya Tumaykin <itumaykin@gmail.com> ---
Reproducible with 3.14.0 kernel.

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Pavol Klačanský <pavol@klacansky.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |pavol@klacansky.com

--- Comment #23 from Pavol Klačanský <pavol@klacansky.com> ---
It occurs at least once a day on 3.18.0-031800rc4-generic.

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[Bug 61941] Random GPU lockups/resets on Mobility Radeon HD 3650 with radeon.dpm=1

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--- Comment #24 from Mihai Coman <mihai@m1x.ro> ---
Still happens on 3.19.2-1-ARCH. After blanking, sometimes the image comes back
on; I can move the cursor, but the interface is unresponsive.

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[Bug 61941] Random GPU lockups/resets on Mobility Radeon HD 3650 with radeon.dpm=1

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Denis Ollier <larchunix+kernel@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |larchunix+kernel@gmail.com

--- Comment #25 from Denis Ollier <larchunix+kernel@gmail.com> ---
Still occurs on kernel 4.7.1-1-ARCH.

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