Direct Rendering Infrastructure

https://bugzilla.kernel.org/show_bug.cgi?id=15166





--- Comment #33 from Alex Deucher <alexdeucher@...>  2010-04-14 14:18:15 ---
One more thing, does disabling kms avoid the problem as well?  E.g., disable
KMS and make sure ums + acceleration is working.

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--- Comment #31 from Alexey Diomin <DiominAY@...>  2010-04-14 12:20:25 ---
2.6.34-rc3 with latest patches from drm-next aslo freeze

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--- Comment #34 from Alex Deucher <alexdeucher@...>  2010-04-14 19:45:51 ---
Created an attachment (id=26004)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=26004)
possible fix

Possible fix version 1.  Please try these patches individually and let me know
if either of them fixes the problem.

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--- Comment #35 from Alex Deucher <alexdeucher@...>  2010-04-14 19:47:01 ---
Created an attachment (id=26005)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=26005)
alternate fix

Alternate fix.  Please try these patches individually and let me know if either
of them fixes the problem.

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--- Comment #36 from Alexey Diomin <DiominAY@...>  2010-04-15 15:04:51 ---
fixs not helped

mesa & xf86-video-ati from git, but all tests in runlevel 3 (without starting
X)

when run F13-Beta-i686-Live-KDE.iso (del rhgb) freeze after start kms
http://ivctrans.by/temp/PIC-0032.jpg

on f12 (tested half of the year earlier) has message as on f13 beta now

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Aurélien Couderc <zecoucou@...> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |zecoucou@...




--- Comment #36 from Alexey Diomin <DiominAY@...>  2010-04-15 15:04:51 ---
fixs not helped

mesa & xf86-video-ati from git, but all tests in runlevel 3 (without starting
X)

when run F13-Beta-i686-Live-KDE.iso (del rhgb) freeze after start kms
http://ivctrans.by/temp/PIC-0032.jpg

on f12 (tested half of the year earlier) has message as on f13 beta now

--- Comment #37 from Aurélien Couderc <zecoucou@...>  2010-04-26 17:38:07 ---
Lenovo X100e also affected.
(Radeon HD 3200)

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--- Comment #38 from Aurélien Couderc <zecoucou@...>  2010-04-27 16:51:41 ---
To answer Alex Deucher's questions:
#32 NoAccel doen't solve the problem (driver 6.13.0)
#33 disabling KMS solves the problem and ums+acceleration works fine

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--- Comment #39 from Alex Deucher <alexdeucher@...>  2010-04-27 17:35:11 ---
Created an attachment (id=26161)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=26161)
add accel parameter

This patch adds an accel parameter that allows you to disable acceleration in
the drm.  boot with radeon.accel=0 and see if you still get the hang.

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--- Comment #40 from Alex Deucher <alexdeucher@...>  2010-04-28 03:38:58 ---
I managed to get remote access to an affected machine today, and to start off
with I tried Linus' git tree, bc113f151a73cb2195c2fb40d7d70acf8e2f9208, to be
exact.  And, low and behold, the backlight worked fine. Switched back to an
older kernel and it hung.  So it appears to be fixed, at least as of that
commit.  Can anyone else confirm and if so, help bisect to see what fixed it?

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--- Comment #41 from Alexey Diomin <DiominAY@...>  2010-04-28 16:43:41 ---
2.6.34-rc5-git8 bug affected

with your patch and boot with radeon.accel=0 all working without freeze

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--- Comment #42 from Alexey Diomin <DiominAY@...>  2010-04-29 08:48:57 ---
updated Linus' and your git tree

apply 2 patch on 2.6.34-rc5-git8

1. diff origin...dave_drm/drm-linus 
2. diff origin...dave_drm/drm-radeon-next

kms work fine

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--- Comment #43 from Alex Deucher <alexdeucher@...>  2010-04-29 15:56:47 ---
(In reply to comment #42)
> updated Linus' and your git tree
> 
> apply 2 patch on 2.6.34-rc5-git8
> 

Which patches are you referring to?

> 1. diff origin...dave_drm/drm-linus 
> 2. diff origin...dave_drm/drm-radeon-next
> 
> kms work fine

Does an updated tree without the patches also work?

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--- Comment #43 from Alex Deucher <alexdeucher@...>  2010-04-29 15:56:47 ---
(In reply to comment #42)
> updated Linus' and your git tree
> 
> apply 2 patch on 2.6.34-rc5-git8
> 

Which patches are you referring to?

> 1. diff origin...dave_drm/drm-linus 
> 2. diff origin...dave_drm/drm-radeon-next
> 
> kms work fine

Does an updated tree without the patches also work?

--- Comment #44 from Manuel Ullmann <ullman.bugs@...>  2010-04-30 23:44:09 ---
Created an attachment (id=26191)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=26191)
output from patch -p1 for all three patches

I tested kernel-2.6.34-rc6 from git. The kernel itself has not fixed the hang.

The patches probably do not apply, because the patched files have changed too
much. I attached the output of 'patch'. However it would be great, if you could
adjust them.

The "add accel parameter patch" applies mostly correct, so the radeon.accel=0
works and in consequence the brightness changing (as Alexey said).

But so far I could not get kms completely to work.

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--- Comment #45 from Alexey Diomin <DiominAY@...>  2010-05-03 08:35:05 ---
For testing I switch to drm-radeon-testing branch

commit 6b8b1786a8c29ce6e32298b93ac8d4a18a2b11c4 resolved bug.

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--- Comment #46 from Manuel Ullmann <ullman.bugs@...>  2010-05-03 21:58:30 ---
Confirmed. Fixed in drm-radeon-testing branch. No patch needed.

Aurélien Couderc, could you confirm this on your notebook?

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--- Comment #47 from Aurélien Couderc <zecoucou@...>  2010-05-04 22:59:41 ---
Yes, it's fixed in drm-radeon-testing for my laptop too.

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--- Comment #48 from Alex Deucher <alexdeucher@...>  2010-05-05 15:00:30 ---
One of my coworkers who is also experiencing the problem bisected it down to:
f3eee54276dfd1117fd94259f2b4a38388264724:

commit f3eee54276dfd1117fd94259f2b4a38388264724
Author: Yinghai Lu <yinghai@...>
Date:   Mon Dec 14 11:52:15 2009 +0900

   x86: Gart: fix breakage due to IOMMU initialization cleanup

   This fixes the following breakage of the commit
   75f1cdf1dda92cae037ec848ae63690d91913eac:

   - GART systems that don't AGP with broken BIOS and more than 4GB
     memory are forced to use swiotlb. They can allocate aperture by
     hand and use GART.

   - GART systems without GAP must disable GART on shutdown.

   - swiotlb usage is forced by the boot option,
     gart_iommu_hole_init() is not called, so we disable GART
     early_gart_iommu_check().

   Signed-off-by: Yinghai Lu <yinghai@...>
   Signed-off-by: FUJITA Tomonori <fujita.tomonori@...>
   LKML-Reference:
   <1260759135-6450-3-git-send-email-fujita.tomonori@...>
   Signed-off-by: Ingo Molnar <mingo@...>

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--- Comment #49 from Manuel Ullmann <ullman.bugs@...>  2010-05-12 11:27:42 ---
If it has been confirmed, that the kernel is bug affected immediately before
this commit, then it´s fine for me. But it seems, that it can be caused by the
broken BIOS alone. The Radeon chip is not linked via AGP, but PCI express and I
don´t have more than 4GB memory (actually 2). Well, I guess we can close the
Bug now. Does anyone disagree? Btw, will this fix be merged into master until
the 2.6.34 release?

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Manuel Ullmann <ullman.bugs@...> changed:

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




--- Comment #50 from Manuel Ullmann <ullman.bugs@...>  2010-05-14 20:57:16 ---
Well, I´ll close the bug now. Would be nice, if anyone could answer my
question, though.

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--- Comment #51 from Alex Deucher <alexdeucher@...>  2010-05-15 12:02:06 ---
No one has yet tracked down what fixed it.  That is just the commit that
apparently broke it, at least for one user.

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Manuel Ullmann <ullman.bugs@...> changed:

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




--- Comment #52 from Manuel Ullmann <ullman.bugs@...>  2010-05-15 12:35:50 ---
Ah, sorry. I misunderstood you. (my english is quite bad)

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--- Comment #53 from Alexey Diomin <DiominAY@...>  2010-05-15 15:24:17 ---
Revert f3eee54276dfd1117fd94259f2b4a38388264724 on current 2.5.34-rc7 also not
resolved bug

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Jérôme Glisse <glisse@...> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |glisse@...




--- Comment #54 from Jérôme Glisse <glisse@...>  2010-05-16 10:47:38 ---
Alexey what do you mean ? The bug is still present on 2.6.34-rc7 ? and
reverting 
f3eee54276dfd1117fd94259f2b4a38388264724 doesn't solve the issue ?

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--- Comment #55 from Alexey Diomin <DiominAY@...>  2010-05-19 08:33:13 ---
2 Jérôme Glisse 

On current moment bug fix only in drm-next brunch, on 2.6.34-rc7 kms freeze.

As say Alex: bug started with commit f3eee54276dfd1117fd94259f2b4a38388264724.
For testing I revert f3eee54276dfd1117fd94259f2b4a38388264724 on 2.6.34-rc7,
but bug remain.

P.S. it's all work for me and maybe for Manuel (laptop equals)

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--- Comment #56 from Manuel Ullmann <ullman.bugs@...>  2010-05-24 00:14:19 ---
The fix is in both branches; drm-next and drm-radeon-testing. It is:

commit 7547a917fa5f3b2406f52c7dcf7ec9ad3c8532eb
Merge: a8089e8 6b8b178
Author: Dave Airlie <airlied@...>
Date:   Tue Apr 20 14:15:09 2010 +1000

    Merge branch 'drm-ttm-unmappable' into drm-core-next

    * drm-ttm-unmappable:
      drm/radeon/kms: enable use of unmappable VRAM V2
      drm/ttm: remove io_ field from TTM V6
      drm/vmwgfx: add support for new TTM fault callback V5
      drm/nouveau/kms: add support for new TTM fault callback V5
      drm/radeon/kms: add support for new fault callback V7
      drm/ttm: ttm_fault callback to allow driver to handle bo placement V6
      drm/ttm: split no_wait argument in 2 GPU or reserve wait

    Conflicts:
        drivers/gpu/drm/nouveau/nouveau_bo.c

Steps to confirm:

1. Create new drm-2.6 repository

2. Checkout one of the mentioned branches

3. Reset to this commit

4. Compile, install kernel and reboot

5. Test backlight changing.
-> Result: Bug fixed

6. cd to git repository. Reset to one commit before (git reset --hard HEAD^).

7. Compile, install kernel and reboot

8. Test backlight changing.
-> Result: kms freeze

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--- Comment #58 from Alex Deucher <alexdeucher@...>  2010-05-28 20:31:43 ---
Already merged into 2.6.35.

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Manuel Ullmann <ullman.bugs@...> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Kernel Version|2.6.32.6 - 2.6.33           |2.6.32.6 - 2.6.34




--- Comment #57 from Manuel Ullmann <ullman.bugs@...>  2010-05-28 19:52:31 ---
Marking 2.6.34 as affected. Fixed however in drm-next and drm-radeon-testing
since 2.6.34-rc5 by the mentioned fix. Any chances, that this will be merged
into 2.6.35 master?

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Manuel Ullmann <ullman.bugs@...> changed:

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




--- Comment #59 from Manuel Ullmann <ullman.bugs@...>  2010-05-29 23:47:03 ---
Thank you. It´s indeed fixed in latest git. No need to leave the bug open, I
think.

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