[Bug 42960] New: Display does not work when resuming from suspend

[Bug 42960] New: Display does not work when resuming from suspend

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=42960

             Bug #: 42960
           Summary: Display does not work when resuming from suspend
    Classification: Unclassified
           Product: DRI
           Version: XOrg CVS
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: DRM/Radeon
        AssignedTo: dri-devel@lists.freedesktop.org
        ReportedBy: sandy.8925@gmail.com


I have an ASUS K53TA laptop.

Relevant specs: AMD A6-3400M APU with integrated Radeon HD6520G and a discrete
Radeon HD6650M. Both are connected through Crossfire (I think). Laptop display
is though the integrated card.

Software info:
Ubuntu 11.04 64 bit using Linux 3.2-rc1 kernel from kernel.org and xorg-edgers
PPA

After resuming from suspend, display does not work.

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[Bug 42960] Display does not work when resuming from suspend

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https://bugs.freedesktop.org/show_bug.cgi?id=42960

--- Comment #1 from Sandeep <sandy.8925@gmail.com> 2011-11-16 20:01:12 UTC ---
Created attachment 53615
  --> https://bugs.freedesktop.org/attachment.cgi?id=53615
glxinfo output

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[Bug 42960] Display does not work when resuming from suspend

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https://bugs.freedesktop.org/show_bug.cgi?id=42960

--- Comment #2 from Sandeep <sandy.8925@gmail.com> 2011-11-16 20:02:02 PST ---
Created attachment 53616
  --> https://bugs.freedesktop.org/attachment.cgi?id=53616
dmesg output before suspending and after resuming

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[Bug 42960] Display does not work when resuming from suspend

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https://bugs.freedesktop.org/show_bug.cgi?id=42960

Alex Deucher <agd5f@yahoo.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |interweiss@yahoo.ca

--- Comment #3 from Alex Deucher <agd5f@yahoo.com> 2011-11-17 06:16:06 PST ---
*** Bug 42999 has been marked as a duplicate of this bug. ***

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[Bug 42960] Display does not work when resuming from suspend

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https://bugs.freedesktop.org/show_bug.cgi?id=42960

--- Comment #4 from Sandeep <sandy.8925@gmail.com> 2012-01-11 15:48:03 PST ---
Created attachment 55471
  --> https://bugs.freedesktop.org/attachment.cgi?id=55471
Output of lspci

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[Bug 42960] Display does not work when resuming from suspend

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https://bugs.freedesktop.org/show_bug.cgi?id=42960

--- Comment #5 from interweiss@yahoo.ca 2012-01-29 14:27:57 UTC ---
Has any progress been made?  I am willing to test some patches...

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[Bug 42960] Display does not work when resuming from suspend

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https://bugs.freedesktop.org/show_bug.cgi?id=42960

--- Comment #6 from interweiss@yahoo.ca ---
Just a reminder, please try to fix this bug.

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[Bug 42960] Display does not work when resuming from suspend

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https://bugs.freedesktop.org/show_bug.cgi?id=42960

--- Comment #7 from Sandeep <sandy.8925@gmail.com> ---
I still face this problem even with the 3.14-rc2 kernel

Internal LVDS display does not work, but content still displays through
external HDMI display.

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[Bug 42960] Display does not work when resuming from suspend

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https://bugs.freedesktop.org/show_bug.cgi?id=42960

--- Comment #8 from leon_ti@mail.ru ---
I can confirm similar behaviour for A6 "ARUBA" APU without any discrete GPU, at
Samsubg NP535U3C laptop.
leon_ti@leonid-samsung:~$ uname -a
Linux leonid-samsung 3.12.0-031200-generic #201311031935 SMP Mon Nov 4 00:36:54
UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

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[Bug 42960] Display does not work when resuming from suspend

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https://bugs.freedesktop.org/show_bug.cgi?id=42960

--- Comment #9 from Sandeep <sandy.8925@gmail.com> ---
I booted Linux 3.13.6 with the drm.debug=4 parameter - it looks like the
internal LVDS output is set to use a different CRTC than the HDMI output, even
in clone mode.

The LVDS monitor's backlight is also off, it does not switch on at all or get
enabled after suspend and resume. Only a full system restart will bring it back
to life.

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[Bug 42960] Display does not work when resuming from suspend

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https://bugs.freedesktop.org/show_bug.cgi?id=42960

--- Comment #10 from Alex Deucher <agd5f@yahoo.com> ---
(In reply to comment #9)
> I booted Linux 3.13.6 with the drm.debug=4 parameter - it looks like the
> internal LVDS output is set to use a different CRTC than the HDMI output,
> even in clone mode.

Neither the driver nor the vbios uses the same crtc for clones since the
displays almost always require different timings even if they are the same
resolution.

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[Bug 42960] Display does not work when resuming from suspend

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https://bugs.freedesktop.org/show_bug.cgi?id=42960

--- Comment #11 from Sandeep <sandy.8925@gmail.com> ---
I attempted to check if it was a backlight problem, following the
troubleshooting steps here: https://wiki.archlinux.org/index.php/Backlight

Booting with those kernel parameters doesn't help in my case.

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[Bug 42960] Display does not work when resuming from suspend

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https://bugs.freedesktop.org/show_bug.cgi?id=42960

--- Comment #12 from Sandeep <sandy.8925@gmail.com> ---
Note:

Suspend and resume works fine on Windows - the laptop's LVDS display is active
and working even after suspend and resume.

I remember that this problem used to occur for Catalyst as well, around version
11.5 , but it got fixed a few months afterwards, and the LVDS display was
active after suspend and resume.

I haven't used Catalyst for several months, so cannot comment on whether it
still works fine now.

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[Bug 42960] Display does not work when resuming from suspend

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https://bugs.freedesktop.org/show_bug.cgi?id=42960

--- Comment #13 from Sandeep <sandy.8925@gmail.com> ---
Is there any other information I can provide to help solve this problem?

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[Bug 42960] Display does not work when resuming from suspend

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https://bugs.freedesktop.org/show_bug.cgi?id=42960

Sandeep <sandy.8925@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #53616|0                           |1
        is obsolete|                            |

--- Comment #14 from Sandeep <sandy.8925@gmail.com> ---
Created attachment 96754
  --> https://bugs.freedesktop.org/attachment.cgi?id=96754&action=edit
dmesg_linux_3.13.6_after_suspend_and_resume

dmesg contents for Linux kernel 3.13.6

This was recorded after suspend and resume. After resume, LVDS panel is not
displaying anything (backlight off). Attempts to turn it on manually (using
xrandr) did not work.

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[Bug 42960] Display does not work when resuming from suspend

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https://bugs.freedesktop.org/show_bug.cgi?id=42960

--- Comment #15 from n0000b <n0000b.n000b@gmail.com> ---
Hi! i've been experiencing some similar issue.
(i posted in bug https://bugs.freedesktop.org/show_bug.cgi?id=43829.)

Have you tried with
sudo pm-suspend --quirk-test --quirk-s3-bios

because if i run this my screen is able to turn on after the resume. Can you
try it?

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[Bug 42960] Display does not work when resuming from suspend

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https://bugs.freedesktop.org/show_bug.cgi?id=42960

--- Comment #16 from Sandeep <sandy.8925@gmail.com> ---
Yes, that worked! Suspending using 

"pm-suspend --quirk-test --quirk-s3-bios"

and the laptop LVDS panel works after resume.

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[Bug 42960] Display does not work when resuming from suspend

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https://bugs.freedesktop.org/show_bug.cgi?id=42960

--- Comment #17 from Sandeep <sandy.8925@gmail.com> ---
I was able to apply this workaround "permanently" by creating a config file in
/etc/pm/config.d/ with the following line:

ADD_PARAMETERS="--quirk-s3-bios"

So, I have a temporary workaround, but it would be preferable to have this work
out of the box.

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[Bug 42960] Display does not work when resuming from suspend

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https://bugs.freedesktop.org/show_bug.cgi?id=42960

n0000b <n0000b.n000b@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           See Also|                            |https://bugs.freedesktop.or
                   |                            |g/show_bug.cgi?id=43829

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[Bug 42960] Display does not work when resuming from suspend

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https://bugs.freedesktop.org/show_bug.cgi?id=42960

--- Comment #18 from n0000b <n0000b.n000b@gmail.com> ---
and how we make this work with
"systemctl suspend"??

isn't pm-utils deprecated?

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[Bug 42960] Display does not work when resuming from suspend

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https://bugs.freedesktop.org/show_bug.cgi?id=42960

n0000b <n0000b.n000b@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           See Also|                            |https://bugs.freedesktop.or
                   |                            |g/show_bug.cgi?id=73882

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[Bug 42960] Display does not work when resuming from suspend

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https://bugs.freedesktop.org/show_bug.cgi?id=42960

Alex Deucher <agd5f@yahoo.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |zboszor@pr.hu

--- Comment #19 from Alex Deucher <agd5f@yahoo.com> ---
*** Bug 43829 has been marked as a duplicate of this bug. ***

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[Bug 42960] Display does not work when resuming from suspend

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--- Comment #20 from Sandeep <sandy.8925@gmail.com> ---
Yes!

Adding acpi_sleep=s3_bios to kernel parmeters works. Now, on suspend and resume
the laptop's LVDS panel cames back to life - no external display attached.

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[Bug 42960] Display does not work when resuming from suspend

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https://bugs.freedesktop.org/show_bug.cgi?id=42960

--- Comment #21 from n0000b <n0000b.n000b@gmail.com> ---
great! also working for me with the kernel parameters. So happy, the first time
i help squash a bug :')
Now, how we make this go uptream, so it work out of the box and we can close
this ticket :B

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[Bug 42960] Display does not work when resuming from suspend

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https://bugs.freedesktop.org/show_bug.cgi?id=42960

--- Comment #22 from Swoorup <swoorupj@gmail.com> ---
Adding s3_bios to kernel parameters didn't work for me. The suspend just does
not work anymore. Laptop wont suspend anymore.

My hardware:
Asus -K55N
Radeon HD7250G

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[Bug 42960] Display does not work when resuming from suspend

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https://bugs.freedesktop.org/show_bug.cgi?id=42960

--- Comment #23 from SpacemanSpiff <hahaurt@gmail.com> ---
Works great on HP dv6z with 6755g2. thanks

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--- Comment #24 from Swoorup <swoorupj@gmail.com> ---
Hey guys are you able to help me out?
I have got this on kernel parameters

pcie_aspm=force acpi_osi='!Windows 2012' acpi=force acpi_enforce_resources=lax
acpi_backlight=vendor acpi_sleep=s3_bios

However when I try to suspend, the laptop just wont suspend or it
suspends(randomly). But when I try to wake up I have got the same issue as
before: blank screen. I'd have to reboot blindly again to use the system

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[Bug 42960] Display does not work when resuming from suspend

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--- Comment #25 from klausenbusk@hotmail.com ---
(In reply to comment #22)
> Adding s3_bios to kernel parameters didn't work for me. The suspend just
> does not work anymore. Laptop wont suspend anymore.
> 
> My hardware:
> Asus -K55N
> Radeon HD7250G

You can also try: acpi_sleep=s3_mode or acpi_sleep=s3_bios,s3_mode

A little info here:https://www.kernel.org/doc/Documentation/power/video.txt

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[Bug 42960] Display does not work when resuming from suspend

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https://bugs.freedesktop.org/show_bug.cgi?id=42960

Alex Deucher <agd5f@yahoo.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |djtm@gmx.net

--- Comment #26 from Alex Deucher <agd5f@yahoo.com> ---
*** Bug 73882 has been marked as a duplicate of this bug. ***

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--- Comment #27 from Swoorup <swoorupj@gmail.com> ---
(In reply to comment #25)
> (In reply to comment #22)
> > Adding s3_bios to kernel parameters didn't work for me. The suspend just
> > does not work anymore. Laptop wont suspend anymore.
> > 
> > My hardware:
> > Asus -K55N
> > Radeon HD7250G
> 
> You can also try: acpi_sleep=s3_mode or acpi_sleep=s3_bios,s3_mode
> 
> A little info here:https://www.kernel.org/doc/Documentation/power/video.txt

Neither of that work. Also I am booted in UEFI mode, if that helps?

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--- Comment #28 from Sandeep <sandy.8925@gmail.com> ---
@Swoorup: You have a lot of other kernel parameters that may be causing
problems. Maybe you should remove some of them? 

Specifically: 
pcie_aspm=force
acpi_osi='!Windows 2012'
acpi=force

acpi_enforce_resources=lax (not sure what this does)

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[Bug 42960] Display does not work when resuming from suspend

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https://bugs.freedesktop.org/show_bug.cgi?id=42960

--- Comment #29 from Alex Deucher <agd5f@yahoo.com> ---
Unfortunately, the "fix" is just a workaround that just calls the legacy vbios
post at resume time.  This is normally disabled for KMS because it doesn't
always work on all systems and also doesn't work with UEFI.

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--- Comment #30 from D <djtm@gmx.net> ---
(In reply to comment #26)
> *** Bug 73882 has been marked as a duplicate of this bug. ***

For some reason, if I use it both (s3_bios,s3_mode) as kernel parameter *and*
as parameter for pm-resume, it works. Otherwise it doesn't. I had already
tested the parameters only for pm-suspend without as much success before. May
also be that 3.14 has improved things, though. Another system fixed.

Anyway,... thanks a lot! :)

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https://bugs.freedesktop.org/show_bug.cgi?id=42960

--- Comment #31 from SpacemanSpiff <hahaurt@gmail.com> ---
(In reply to comment #29)
> Unfortunately, the "fix" is just a workaround that just calls the legacy
> vbios post at resume time.  This is normally disabled for KMS because it
> doesn't always work on all systems and also doesn't work with UEFI.

Any possibility of a proper fix? Is this a bios bug? 
Workaround works on my machine but many people would probably work without
using sleep as it doesnt work oob.
thanks

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https://bugs.freedesktop.org/show_bug.cgi?id=42960

--- Comment #32 from Sandeep <sandy.8925@gmail.com> ---
I tested with 3.15-git , and it looks like the kernel parameter has no effect
there - the same problem occurs again! Even with acpi_sleep=s3_bios , on
suspend and resume the laptop LVDS display is blank.

Does anyone know if this was an intentional change, to remove the ability to do
this?

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https://bugs.freedesktop.org/show_bug.cgi?id=42960

--- Comment #33 from Sandeep <sandy.8925@gmail.com> ---
After poking around a bit, I found out that I can re-enable the LVDS display
using KDE's display settings (which uses xrandr), so it's just that the display
isn't turned on by default for some reason (even though it was being used
before suspend)

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https://bugs.freedesktop.org/show_bug.cgi?id=42960

--- Comment #34 from D <djtm@gmx.net> ---
(In reply to comment #32)
> I tested with 3.15-git , and it looks like the kernel parameter has no
> effect there - the same problem occurs again! Even with acpi_sleep=s3_bios ,
> on suspend and resume the laptop LVDS display is blank.
> 
> Does anyone know if this was an intentional change, to remove the ability to
> do this?

Hi, did you check using echo mem > /sys/power/state?

Because e.g. pm-suspend resets those parameters via
/proc/sys/kernel/acpi_video_flags. (Value should be 1, 2, or 3 if you have
kernel parameters set)

For pm-suspend to work (e.g. *Ubuntu) you need to create a file 
/etc/pm/config.d/radeon
which contains
QUIRK_S3_BIOS="true"
QUIRK_S3_MODE="true"

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https://bugs.freedesktop.org/show_bug.cgi?id=42960

--- Comment #35 from D <djtm@gmx.net> ---
By the way: I've noticed that freeze > /sys/power/state causes the same issue,
only the fix does not work. It doesn't even help to suspend and resume the
computer afterwards, the display remains blank. 

Does someone have an idea on how to deal with this issue?

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--- Comment #36 from Sandeep <sandy.8925@gmail.com> ---
When testing now, it works fine. 

When I tested previously, before suspending, I might have turned off the laptop
monitor using xrandr, which is why it looked like the problem was still
present.

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https://bugs.freedesktop.org/show_bug.cgi?id=42960

Alex Deucher <agd5f@yahoo.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |rdp.effort@gmail.com

--- Comment #37 from Alex Deucher <agd5f@yahoo.com> ---
*** Bug 77562 has been marked as a duplicate of this bug. ***

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--- Comment #38 from Alex Deucher <agd5f@yahoo.com> ---
Created attachment 97562
  --> https://bugs.freedesktop.org/attachment.cgi?id=97562&action=edit
possible fix

Does the attached patch help?

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--- Comment #39 from Hardening <rdp.effort@gmail.com> ---
Hi Alex, 

I have just tested the possible fix and it has no effects here. I can provide a
dmesg if it is useful.

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https://bugs.freedesktop.org/show_bug.cgi?id=42960

--- Comment #40 from S. Christian Collins <s_chriscollins@hotmail.com> ---
Adding the quirk lines from comment #34 worked for me.

** My System **
OS: Kubuntu 14.04 amd64 w/ KDE SC 4.13.0
PC: HP Pavilion m6-1035dx
CPU/GPU: AMD A10-4600M APU with Radeon HD 7660G Graphics
RAM: 6GB DDR3 800 MHz
Linux Kernel: 3.13.0-24-generic
Screen Resolution: 1366 x 768
Xserver: 2:1.15.1-0ubuntu2

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--- Comment #41 from D <djtm@gmx.net> ---
(In reply to comment #38)
> Does the attached patch help?

It does not fix suspend freeze for me if that's what you mean. Thanks anyway!

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--- Comment #42 from Sandeep <sandy.8925@gmail.com> ---
Compiling, will reply when I have finished testing. I am applying it against
3.15-rc2

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https://bugs.freedesktop.org/show_bug.cgi?id=42960

--- Comment #43 from Øyvind Sæther <oyvinds@everdot.org> ---
Resume from suspend (both RAM and disk) is broken on my system with anything
later than 3.12.x (tried 3.13.x and 3.14.x).

No idea if this helps anyone, but if your radeon card breaks suspend with the
latest kernels then try the 3.12.x series before ripping the card out - it may
work just fine.

My card is:

01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI]
Pitcairn PRO [Radeon HD 7850]

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https://bugs.freedesktop.org/show_bug.cgi?id=42960

--- Comment #44 from Jose P. <lbdkmjdf@sharklasers.com> ---
I added "acpi_sleep=s3_bios" to the kernel command line, but it looks like it
didn't help. I have to run pm-suspend manually...
I wish I had the means to test the patch, but for now, I can't :(

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https://bugs.freedesktop.org/show_bug.cgi?id=42960

--- Comment #45 from Alex Deucher <agd5f@yahoo.com> ---
(In reply to comment #43)
> Resume from suspend (both RAM and disk) is broken on my system with anything
> later than 3.12.x (tried 3.13.x and 3.14.x).

Can you bisect?

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--- Comment #46 from n0000b <n0000b.n000b@gmail.com> ---
(In reply to comment #38)
> Created attachment 97562 [details] [review]
> possible fix
> 
> Does the attached patch help?

tested the patch. didn't work for me

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https://bugs.freedesktop.org/show_bug.cgi?id=42960

--- Comment #47 from reverber <1806whiteguard@gmail.com> ---
With kernel 3.15 and later I got "diplay not working after suspend" again. But
I find out how to work around. I had scrip on shortcut for KDE and this script
made display to work. Command of script is "sleep 1; xset dpms force standby".

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https://bugs.freedesktop.org/show_bug.cgi?id=42960

--- Comment #48 from Alex Deucher <agd5f@yahoo.com> ---
(In reply to comment #47)
> With kernel 3.15 and later I got "diplay not working after suspend" again.
> But I find out how to work around. I had scrip on shortcut for KDE and this
> script made display to work. Command of script is "sleep 1; xset dpms force
> standby".

Can you bisect?

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https://bugs.freedesktop.org/show_bug.cgi?id=42960

--- Comment #49 from Jose P. <lbdkmjdf@sharklasers.com> ---
(In reply to comment #47)
> With kernel 3.15 and later I got "diplay not working after suspend" again.
> But I find out how to work around. I had scrip on shortcut for KDE and this
> script made display to work. Command of script is "sleep 1; xset dpms force
> standby".
Are you using that workaround alone, or with the pm-suspend + quirks solutions
(shown in comment #15 and comment #34) ?

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https://bugs.freedesktop.org/show_bug.cgi?id=42960

--- Comment #50 from SpacemanSpiff <a3372470@trbvm.com> ---
(In reply to comment #48)
> (In reply to comment #47)
> > With kernel 3.15 and later I got "diplay not working after suspend" again.
> > But I find out how to work around. I had scrip on shortcut for KDE and this
> > script made display to work. Command of script is "sleep 1; xset dpms force
> > standby".
> 
> Can you bisect?

3.12 does not work for me.

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https://bugs.freedesktop.org/show_bug.cgi?id=42960

--- Comment #51 from reverber <1806whiteguard@gmail.com> ---
(In reply to comment #49)
> (In reply to comment #47)
> > With kernel 3.15 and later I got "diplay not working after suspend" again.
> > But I find out how to work around. I had scrip on shortcut for KDE and this
> > script made display to work. Command of script is "sleep 1; xset dpms force
> > standby".
> Are you using that workaround alone, or with the pm-suspend + quirks
> solutions (shown in comment #15 and comment #34) ?

With quirks like in comment #34 and in grub options.

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https://bugs.freedesktop.org/show_bug.cgi?id=42960

--- Comment #52 from reverber <1806whiteguard@gmail.com> ---
(In reply to comment #48)
> (In reply to comment #47)
> > With kernel 3.15 and later I got "diplay not working after suspend" again.
> > But I find out how to work around. I had scrip on shortcut for KDE and this
> > script made display to work. Command of script is "sleep 1; xset dpms force
> > standby".
> 
> Can you bisect?

I guess I can't. I don't use any patches. I just use Xorg and Mesa from debian.

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--- Comment #53 from Markus Ilmola <markus.ilmola@pp.inet.fi> ---
The trick given in 

https://wiki.archlinux.org/index.php/pm-utils#Display_not_powering_on_after_suspension_.28radeon.29

permanently fixes this problem on my HP Pavilion DV6.

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Alex Deucher <alexdeucher@gmail.com> changed:

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

--- Comment #54 from Alex Deucher <alexdeucher@gmail.com> ---
*** Bug 86133 has been marked as a duplicate of this bug. ***

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--- Comment #55 from leon_ti@mail.ru ---
Created attachment 110977
  --> https://bugs.freedesktop.org/attachment.cgi?id=110977&action=edit
Bisection log

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--- Comment #56 from leon_ti@mail.ru ---
I have bisected at Samsung NP535U3C laptop, with a AMD A6 APU without external
GPU.

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[Bug 42960] Display does not work when resuming from suspend

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https://bugs.freedesktop.org/show_bug.cgi?id=42960

--- Comment #57 from Alex Deucher <alexdeucher@gmail.com> ---
Created attachment 113380
  --> https://bugs.freedesktop.org/attachment.cgi?id=113380&action=edit
possible fix

Does this patch help?

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[Bug 42960] Display does not work when resuming from suspend

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https://bugs.freedesktop.org/show_bug.cgi?id=42960

--- Comment #58 from n0000b <n0000b.n000b@gmail.com> ---
(In reply to Alex Deucher from comment #57)
> Created attachment 113380 [details] [review]
> possible fix
> 
> Does this patch help?

i tested the patch, it helps, the screen is able to recover after suspend and
resume (don't need the quirks).

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[Bug 42960] Display does not work when resuming from suspend

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https://bugs.freedesktop.org/show_bug.cgi?id=42960

--- Comment #59 from Sandeep <sandy.8925@gmail.com> ---
I will also try the patch sometime in the next few days and will respond.

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[Bug 42960] Display does not work when resuming from suspend

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https://bugs.freedesktop.org/show_bug.cgi?id=42960

--- Comment #60 from dennis.jansen@web.de ---
Just a hint: I've noticed that my display (with quirks) only somtimes does not
properly resume. (Also always from hibernation.) In both cases, it helps to
suspend to ram again and resume again and the display works again.

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[Bug 42960] Display does not work when resuming from suspend

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https://bugs.freedesktop.org/show_bug.cgi?id=42960

--- Comment #61 from Hardening <rdp.effort@gmail.com> ---
Very nice Alex, the last patch fixes resume for me. My screen was staying black
at resume since I bought my laptop and now sleeping / resume works perfectly.
Thanks.

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[Bug 42960] Display does not work when resuming from suspend

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https://bugs.freedesktop.org/show_bug.cgi?id=42960

--- Comment #62 from leon_ti@mail.ru ---
Seems that proposed patch works for me. Thanks a lot, Alex!

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[Bug 42960] Display does not work when resuming from suspend

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https://bugs.freedesktop.org/show_bug.cgi?id=42960

Alex Deucher <alexdeucher@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #63 from Alex Deucher <alexdeucher@gmail.com> ---
fixed in:
66c2b84ba6256bc5399eed45582af9ebb3ba2c15

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[Bug 42960] Display does not work when resuming from suspend

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https://bugs.freedesktop.org/show_bug.cgi?id=42960

--- Comment #64 from Sandeep <sandy.8925@gmail.com> ---
Thanks a lot Alex! I've tested out the patch, and it works for me. Laptop
screen is now lit up every time after suspend and resume. My laptop is moving
towards perfect usability on Linux!

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