Nouveau - Mar 2008 - [Bug 15276] New: text rendering, PGRAPH_ERROR/ILLEGAL_MTHD/ PROTECTION_FAULT spam in syslog

http://bugs.freedesktop.org/show_bug.cgi?id=15276

           Summary: text rendering,
                    PGRAPH_ERROR/ILLEGAL_MTHD/PROTECTION_FAULT spam in
                    syslog
           Product: xorg
           Version: git
          Platform: x86 (IA32)
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
        AssignedTo: nouveau at lists.freedesktop.org
        ReportedBy: pabs3 at bonedaddy.net
         QAContact: xorg-team at lists.x.org


Created an attachment (id=15578)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=15578)
syslog & Xorg log

Not sure if these are related, but some text doesn't render and I get
PGRAPH_ERROR spam in syslog).

The apps I was using are openbox (text in menu doesn't render), xterm (text
renders), epiphany (menu text doesn't render, some website text renders).

I've attached the xorg log and the stretch of syslog (with drm debug=1) when
Xorg was active.

I built xorg and nouveau from git yesterday using jhbuild.

The nv driver in Debian sid doesn't have this problem (2.1.8).


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--- Comment #1 from Stephane Marchesin <marchesin at icps.u-strasbg.fr> 
2008-03-31 04:16:04 PST ---
What framebuffer driver are you using here ? If it's nvidiafb, it's not
supported (this driver stomps all over the card state to the point we can't
really maintain it properly).


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--- Comment #2 from Paul Wise <pabs3 at bonedaddy.net>  2008-03-31
04:31:38 PST ---
I don't seem to have any fb driver loaded. I have it installed, but lsmod |
grep nvidia only points out the nvidia_agp driver. lsmod | grep fb reports
nothing.


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--- Comment #3 from Stephane Marchesin <marchesin at icps.u-strasbg.fr> 
2008-03-31 04:34:54 PST ---
There is this line:

Mar 31 16:07:18 morrison kernel: [drm] Used old pci detect: framebuffer loaded

It's either a *fb driver, or the nvidia binary driver, which is bad in any
case.


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--- Comment #4 from Paul Wise <pabs3 at bonedaddy.net>  2008-03-31
05:20:21 PST ---
I purged everything from the nvidia 96xx legacy proprietary driver after I
verified that it still sucks (used to kernel freeze occasionally, now kernel
freezes when X starts) and before starting with nouveau stuff.

Looks like the fb thing was caused by vesafb being compiled into my kernel and
having vga=... on the kernel command-line. Without this, I still get the same
syslog spam and the text rendering issue. The monitor attached to the computer
is now being used on another computer, I'll get you the updated logs later
tonight.


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Paul Wise <pabs3 at bonedaddy.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #15578|0                           |1
        is obsolete|                            |




--- Comment #5 from Paul Wise <pabs3 at bonedaddy.net>  2008-04-01
03:04:49 PST ---
Created an attachment (id=15598)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=15598)
log without vesafb

New log attached without the vesafb thing. Same issues as before.


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--- Comment #6 from Paul Wise <pabs3 at bonedaddy.net>  2009-01-31
23:58:47 PST ---
When I add MigrationHeuristic greedy to xorg.conf the fonts situation is fixed.

http://nouveau.freedesktop.org/wiki/MigrationHeuristic

I still get the PGRAPH_ERROR syslog spam though.

This is with Debian sid, Linux 2.6.26 and xserver-xorg-video-nouveau
1:0.0.10~git+20090105+7dc567d-1.


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--- Comment #7 from Ben Skeggs <skeggsb at gmail.com>  2009-02-01 00:55:57
PST ---
Ah, I actually noticed this bug earlier today and was planning on seeing if you
still had the hw available.  I think I know the issue here, I'll push the
fix
to xf86-video-nouveau git.  If you're able to update afterwards, I'd
love to
know if it fixes things for you.


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--- Comment #8 from Paul Wise <pabs3 at bonedaddy.net>  2009-02-01
02:18:46 PST ---
Will attempt that (or pester the Debian nouveau maintainer), please let me know
when you've pushed the changes and to where.


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--- Comment #9 from Ben Skeggs <skeggsb at gmail.com>  2009-02-01 02:22:35
PST ---
The fix is in the 2D driver now.  If you don't want to wait for the debian
maintainers to repackage the updates, you can install the driver yourself from
git.

If you start to follow the instructions at
http://nouveau.freedesktop.org/wiki/InstallNouveau from step 7 you should be
fine.


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--- Comment #10 from Paul Wise <pabs3 at bonedaddy.net>  2009-02-01
03:30:44 PST ---
Applied your patch to the Debian package and now I no longer get the
PGRAPH_ERROR spam.

With the patch I can see the fonts fine with or without MigrationHeuristic
greedy.

Without the MigrationHeuristic greedy, I see some horizontal pixel breakage on
the Debian swirl at xdm after logging in and then logging out. Looks like maybe
uninitialised pixels being passed to the GPU, unsure about this.

After building git master, installing nouveau_drv.so and restarting X/xdm I can
still see the pixel breakage.

Anyway, I think this bug can be closed now since the fonts and PGRAPH_ERROR
things are fixed, thanks heaps!

BTW, the Debian partition on the machine is for development, so if you need me
to try anything on it, please let me know
(http://bonedaddy.net/pabs3/about/#contact).

BTW, during testing the git master driver, I saw some "Bad page state in
process 'Xorg'" messages on the console, the kernel printed a
backtrace too:

Bad page state in process 'Xorg'
page:c1000000 flags:0x00000400 mapping:00000000 mapcount:0 count:0
Trying to fix it up, but a reboot is needed
Backtrace:
Pid: 5881, comm: Xorg Not tainted 2.6.26-1-686 #1
 [<c015a2e0>] bad_page+0x4d/0x74
 [<c015a711>] free_hot_cold_page+0x58/0x170
 [<ee92e21f>] agp_generic_destroy_page+0x3a/0x52 [agpgart]
 [<ee92e95e>] agp_free_memory+0x8a/0xac [agpgart]
 [<eea96240>] drm_agp_free_memory+0xb/0x13 [drm]
 [<eea937ca>] drm_free_agp+0x5/0xe [drm]
 [<eea914dc>] drm_lastclose+0x150/0x31b [drm]
 [<c01750f3>] __fput+0x8a/0x135
 [<c0165794>] remove_vma+0x25/0x43
 [<c016586c>] exit_mmap+0xba/0xd3
 [<c01206e2>] mmput+0x20/0x7e
 [<c0124ff2>] do_exit+0x1e5/0x5c9
 [<c012543a>] do_group_exit+0x64/0x8d
 [<c0103853>] sysenter_past_esp+0x78/0xb1
 ======================

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Ben Skeggs <skeggsb at gmail.com> changed:

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




--- Comment #11 from Ben Skeggs <skeggsb at gmail.com>  2009-02-01
14:12:36 PST ---
Thanks for testing, I'll close this bug as fixed.  As for your other issues,
feel free to file bugs for them so they don't get forgotten :)


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