[Bug 67043] New: Atombios stuck in a look during resume

[Bug 67043] New: Atombios stuck in a look during resume

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=67043

          Priority: medium
            Bug ID: 67043
          Assignee: dri-devel@lists.freedesktop.org
           Summary: Atombios stuck in a look during resume
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: parag.warudkar@gmail.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: unspecified
         Component: DRM/Radeon
           Product: DRI

With mainline git kernel build from yesterday (3.11.0-rc1+ #7 SMP Wed Jul 17
11:34:34 EDT) I see resume takes longer and the below is printed in system log
-

[ 7647.285017] sd 0:0:0:0: [sda] Starting disk
[ 7647.374821] [drm:atom_op_jump] *ERROR* atombios stuck in loop for more than
5secs aborting
[ 7647.374822] [drm:atom_execute_table_locked] *ERROR* atombios stuck executing
CD3E (len 55, WS 0, PS 0) @ 0xCD61

I think this started after DPM commits. Prior kernels don't show this error.

Hardware is 

lspci |grep VGA
01:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI Turks
PRO [Radeon HD 7570]

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[Bug 67043] Atombios stuck in a look during resume

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https://bugs.freedesktop.org/show_bug.cgi?id=67043

--- Comment #1 from Alex Deucher <agd5f@yahoo.com> ---
Please attach your dmesg output.  Is this with dpm enabled?  Do you still have
the issue without dpm enabled?  If so can you bisect?

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[Bug 67043] Atombios stuck in a look during resume

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https://bugs.freedesktop.org/show_bug.cgi?id=67043

--- Comment #2 from Parag <parag.warudkar@gmail.com> ---
Created attachment 82603
  --> https://bugs.freedesktop.org/attachment.cgi?id=82603&action=edit
dmesg with dpm enabled

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[Bug 67043] Atombios stuck in a look during resume

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=67043

--- Comment #3 from Parag <parag.warudkar@gmail.com> ---
Created attachment 82613
  --> https://bugs.freedesktop.org/attachment.cgi?id=82613&action=edit
dmesg from 3.10.1 kernel without the timeout issue

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[Bug 67043] Atombios stuck in a look during resume

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https://bugs.freedesktop.org/show_bug.cgi?id=67043

--- Comment #4 from Parag <parag.warudkar@gmail.com> ---
Tried with radeon.dpm=0 on current mainline - no difference, still got the
stuck message and delayed resume. Also tried with 3.8 Ubuntu stock kernel and
3.10.1 kernel from Ubunty daily mainline builds - the issue doesn't exist on
both kernels. So it matches my vague memory that it started post 3.11 - unsure
if that was after dpm or some other patchset prior to that.

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[Bug 67043] Atombios stuck in a look during resume

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https://bugs.freedesktop.org/show_bug.cgi?id=67043

--- Comment #5 from Alex Deucher <agd5f@yahoo.com> ---
If it started in 3.11 can you bisect?

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[Bug 67043] Atombios stuck in a look during resume

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https://bugs.freedesktop.org/show_bug.cgi?id=67043

--- Comment #6 from Parag <parag.warudkar@gmail.com> ---
I suck at bisecting, but yes, I will give it a shot.

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[Bug 67043] Atombios stuck in a look during resume

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=67043

--- Comment #7 from Parag <parag.warudkar@gmail.com> ---
After a not-so-clean git bisect (compilation failures in vgacon.c, some TI
driver I didn't need) this was the result - at least it is related to drm.

git bisect good
372835a8527f85b3eff20a18c2c339e827dfd4e4 is the first bad commit
commit 372835a8527f85b3eff20a18c2c339e827dfd4e4
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Sat Jun 15 00:13:13 2013 +0200

    drm/crtc-helper: explicit DPMS on after modeset

    Atm the crtc helper implementation of set_config has really
    inconsisten semantics: If just an fb update is good enough, dpms state
    will be left as-is, but if we do a full modeset we force everything to
    dpms on.

    This change has already been applied to the i915 modeset code in

    commit e3de42b68478a8c95dd27520e9adead2af9477a5
    Author: Imre Deak <imre.deak@intel.com>
    Date:   Fri May 3 19:44:07 2013 +0200

        drm/i915: force full modeset if the connector is in DPMS OFF mode

    which according to Greg KH seems to aim for a new record in most
    Bugzilla: links in a commit message.

    The history of this dpms forcing is pretty interesting. This patch
    here is an almost-revert of

    commit 811aaa55ba21ab37407018cfc01770d6b037d3fb
    Author: Keith Packard <keithp@keithp.com>
    Date:   Thu Feb 3 16:57:28 2011 -0800

        drm: Only set DPMS ON when actually configuring a mode

    which fixed the bug of trying to dpms on disabled outputs, but
    introduced the new discrepancy between an fb update only and full
    modesets. The actual introduction of this goes back to

    commit bf9dc102e284a5aa78c73fc9d72e11d5ccd8669f
    Author: Keith Packard <keithp@keithp.com>
    Date:   Fri Nov 26 10:45:58 2010 -0800

        drm: Set connector DPMS status to ON in drm_crtc_helper_set_config

    And if you'd dig around in the i915 driver code there's even more fun
    around forcing dpms on and losing our heads and temper of the
    resulting inconsistencies. Especially the DP re-training code had tons
    of funny stuff in it.

    Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
    Signed-off-by: Dave Airlie <airlied@redhat.com>

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[Bug 67043] Atombios stuck in a look during resume

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https://bugs.freedesktop.org/show_bug.cgi?id=67043

--- Comment #8 from Parag <parag.warudkar@gmail.com> ---
Verified : Reverting 372835a8527f85b3eff20a18c2c339e827dfd4e4 from HEAD does
make the problem go away.

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[Bug 67043] Atombios stuck in a look during resume

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https://bugs.freedesktop.org/show_bug.cgi?id=67043

--- Comment #9 from Alex Deucher <agd5f@yahoo.com> ---
Created attachment 82700
  --> https://bugs.freedesktop.org/attachment.cgi?id=82700&action=edit
possible fix

Does the attached patch fix it?

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[Bug 67043] Atombios stuck in a look during resume

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https://bugs.freedesktop.org/show_bug.cgi?id=67043

Parag <parag.warudkar@gmail.com> changed:

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

--- Comment #10 from Parag <parag.warudkar@gmail.com> ---
Tested a couple times with HEAD plus patch in previous comment and it seems to
have fixed the issue. Thanks!

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[Bug 67043] Atombios stuck in a loop during resume

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=67043

Alexandre Demers <alexandre.f.demers@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Atombios stuck in a look    |Atombios stuck in a loop
                   |during resume               |during resume

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[Bug 67043] Atombios stuck in a loop during resume

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https://bugs.freedesktop.org/show_bug.cgi?id=67043

Alex Deucher <agd5f@yahoo.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |johannes.hirte@fem.tu-ilmen
                   |                            |au.de

--- Comment #11 from Alex Deucher <agd5f@yahoo.com> ---
*** Bug 66767 has been marked as a duplicate of this bug. ***

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[Bug 67043] Atombios stuck in a loop during resume

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https://bugs.freedesktop.org/show_bug.cgi?id=67043

Mike Lothian <mike@fireburn.co.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|FIXED                       |---
                 CC|                            |mike@fireburn.co.uk

--- Comment #12 from Mike Lothian <mike@fireburn.co.uk> ---
This is happening still on a Trinity 7500G

00:01.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc.
[AMD/ATI] Trinity [Radeon HD 7500G] [1002:990a]

Even with this patch

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[Bug 67043] Atombios stuck in a loop during resume

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https://bugs.freedesktop.org/show_bug.cgi?id=67043

--- Comment #13 from Mike Lothian <mike@fireburn.co.uk> ---
Created attachment 83581
  --> https://bugs.freedesktop.org/attachment.cgi?id=83581&action=edit
Dmesg

This is running with the latest drm-fixes-3.11 branch with the above fix

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[Bug 67043] Atombios stuck in a loop during resume

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[-- Attachment #1.1: Type: text/plain, Size: 348 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=67043

--- Comment #14 from Parag <parag.warudkar@gmail.com> ---
Note that the original one and its duplicate 66767 reported in this thread
happened on suspend/resume whereas this one doesn't seem to be suspend/resume
related.

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[Bug 67043] Atombios stuck in a loop during resume

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https://bugs.freedesktop.org/show_bug.cgi?id=67043

--- Comment #15 from Mike Lothian <mike@fireburn.co.uk> ---
I was actually in a VT at the time I think when this normally happens X is up
and the whole laptop appears to freeze up

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[Bug 67043] Atombios stuck in a loop during resume

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https://bugs.freedesktop.org/show_bug.cgi?id=67043

Alex Deucher <agd5f@yahoo.com> changed:

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

--- Comment #16 from Alex Deucher <agd5f@yahoo.com> ---
I think you may be seeing a different issue that just happens to have a similar
sympotom.  Please open a new bug.  This particular issue is fixed by the
referenced patch.

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