[Bug 28440] New: Linux kernel 2.6.34's KMS crashes and disables GPU acceleration with X1250.

[Bug 28440] New: Linux kernel 2.6.34's KMS crashes and disables GPU acceleration with X1250.

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=28440

           Summary: Linux kernel 2.6.34's KMS crashes and disables GPU
                    acceleration with X1250.
           Product: DRI
           Version: XOrg CVS
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Radeon
        AssignedTo: dri-devel@lists.freedesktop.org
        ReportedBy: coomasiehead@yahoo.com


Created an attachment (id=36138)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=36138)
2.6.34 kernel's KMS doesn't support X1250 well.

OS: Slackware64 13.1
Kernel : 2.6.34-smp(It's not included in slackware. I compiled myself)
I told kernel to enable KMS automatically and compiled the kernel.
While I boot 2.6.34-smp, I see a fuzzy brown rectangle in the right side of my
screen for about half a second.

dmesg tells me GPU acceleration is disabled, and I can't use compiz.
I included dmesg.txt.

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[Bug 28440] Linux kernel 2.6.34's KMS crashes and disables GPU acceleration with X1250.

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=28440

--- Comment #1 from Jerome Glisse <glisse@freedesktop.org> 2010-06-08 04:14:28 PDT ---
Try booting with radeon.dynpm=0 and attach new dmesg.

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[Bug 28440] Linux kernel 2.6.34's KMS crashes and disables GPU acceleration with X1250.

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=28440

Jerome Glisse <glisse@freedesktop.org> changed:

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

--- Comment #2 from Jerome Glisse <glisse@freedesktop.org> 2010-06-08 04:45:48 PDT ---
Was boot parameter closing.

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[Bug 28440] Linux kernel 2.6.34's KMS crashes and disables GPU acceleration with X1250.

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=28440

coomasiehead@yahoo.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|NOTOURBUG                   |FIXED

--- Comment #3 from coomasiehead@yahoo.com 2010-06-08 05:11:53 PDT ---
It was "vga=791" that crashed KMS, and after I replaced it with video=1024x768,
everything went fine.

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[Bug 28440] Linux kernel 2.6.34's KMS crashes and disables GPU acceleration with X1250.

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=28440

--- Comment #4 from Marcin Slusarz <marcin.slusarz@gmail.com> 2010-06-08 09:10:50 PDT ---
If disabling vesafb fixes your problem, it means vesafb->radeon handoff does
not work properly. I fixed similar issue in nouveau code and I can prepare a
patch for radeon. Are you willing to test it?

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[Bug 28440] Linux kernel 2.6.34's KMS crashes and disables GPU acceleration with X1250.

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=28440

coomasiehead@yahoo.com changed:

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

--- Comment #5 from coomasiehead@yahoo.com 2010-06-08 22:23:53 PDT ---
If you prepare it, sure. I am willing to test it although it takes about 15~20
minutes to recompile a kernel.

Why don't you use KMS from the beginning?
I included radeon in initrd, but radeon in initrd complains like the below.
[    4.227541] platform radeon_cp.0: firmware: requesting radeon/RS600_cp.bin
[   64.227150] [drm:r100_cp_init] *ERROR* Failed to load firmware!
[   64.227295] radeon 0000:01:05.0: Disabling GPU acceleration
You saw it right. Initrd tried for a while to load the firmware and had it
display a black screen until it failed to load the firmware. I thought the
kernel was in a panic.

Unless I know how to have initrd recognize or include the firmware, compiling
radeon into kernel is the only solution for making KMS appear so early.
However, recompiling kernel each time I compile radeon would be a waste of
time, which emphasizes the importance of including radeon with the right
firmware in initrd.

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[Bug 28440] Linux kernel 2.6.34's KMS crashes and disables GPU acceleration with X1250.

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https://bugs.freedesktop.org/show_bug.cgi?id=28440

--- Comment #6 from coomasiehead@yahoo.com 2010-06-08 22:26:15 PDT ---
No.... vesafb was not likely a problem.
I specified vga=791 as a global option in /etc/lilo.conf, and it caused the
problem. After I replaced vga=791 with video=800x600, KMS started working
again.

Whether vesafb handles the control over to KMS well should be tested since I
didn't test it.

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[Bug 28440] Linux kernel 2.6.34's KMS crashes and disables GPU acceleration with X1250.

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=28440

--- Comment #7 from Marcin Slusarz <marcin.slusarz@gmail.com> 2010-06-09 08:07:20 PDT ---
I'm confused. You seem to respond to some questions I didn't ask... vga=791
enables vesafb, but you claim you didn't test it...

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[Bug 28440] Linux kernel 2.6.34's KMS crashes and disables GPU acceleration with X1250.

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=28440

--- Comment #8 from coomasiehead@yahoo.com 2010-06-09 18:08:09 PDT ---
Sorry for my bad language plus sleep deprivation.
The original configuration was vesafb & DRM & radeon & KMS compiled into the
kernel with vga=791 in /etc/lilo.conf.
When it generated error, I removed vesafb from the kernel, recompiled the
kernel, replaced vga=791 with video=800x600 in /etc/lilo.conf, and rebooted.
Thus, I only tested if vga=791 crashes KMS, but I couldn't test if vesafb
handles the control over to KMS smoothly with or without video=800x600 in
/etc/lilo.conf. But I guess vesafb(or uvesafb) and KMS can live together if
vesafb has no problem with video=800x600.

I pasted dmesg. http://pastebin.org/322359
Beware this paste will be expired after a month from now.

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[Bug 28440] Linux kernel 2.6.34's KMS crashes and disables GPU acceleration with X1250.

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=28440

--- Comment #9 from Marcin Slusarz <marcin.slusarz@gmail.com> 2010-06-10 12:51:28 PDT ---
So there was no bug - just a problem with missing firmware?
If yes, please close the bug.

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[Bug 28440] Linux kernel 2.6.34's KMS crashes and disables GPU acceleration with X1250.

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=28440

coomasiehead@yahoo.com changed:

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

--- Comment #10 from coomasiehead@yahoo.com 2010-06-10 16:58:21 PDT ---
This is not a bug although the missing firmware is another bug.
This bug is closed.

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