Bug 342205 – PPC-Kernel: ATI Radeon 9000: Corrupt output and system crash

• Product: Gentoo Linux
• Status: RESOLVED UPSTREAM

[Description Johannes Geiss 2010-10-22 15:28:16 UTC]

The kernel for PowerPC (G4) linux-2.6.34-gentoo-r1 shows corrupt hardware accelerated graphics and crashes often the system while resizing a window (e.g. xterm console with fvwm). At least th Screen goes black and no Ctrl-Alt-Fn works. Only reboot via Alt-S-Req-r/s/u/b.

Kernel version linux-2.6.33-gentoo-r2 works fine.

The graphics card is VGA compatible controller: ATI Technologies Inc Radeon RV250 If [Radeon 9000] (rev 01).

[Comment 1 Johannes Geiss 2010-10-22 15:29:56 UTC]

Created attachment 251597 [details]
Corrupt output of glxgears (Speed seems to be OK, but there are no gears visible, only some lines for some milliseconds)

[Comment 2 Johannes Geiss 2010-10-22 15:31:02 UTC]

Created attachment 251599 [details]
Corrupt output of blender

[Comment 3 Chí-Thanh Christopher Nguyễn 2010-10-23 07:57:21 UTC]

Please also post dmesg and Xorg.0.log.
Are you still able to reach the computer with ping/ssh?

[Comment 4 Johannes Geiss 2010-10-23 11:12:45 UTC]

Created attachment 251675 [details]
Here is the Xorg log.

[Comment 5 Johannes Geiss 2010-10-23 11:13:39 UTC]

Created attachment 251677 [details]
The dmesg log.

[Comment 6 Johannes Geiss 2010-10-23 11:17:22 UTC]

Created attachment 251679 [details]
The syslog. I found a crach at 06:42:15.

[Comment 7 Johannes Geiss 2010-10-23 11:21:30 UTC]

(In reply to comment #3)
> Are you still able to reach the computer with ping/ssh?

I haven't tried yet. But if you need to know, just say it and I will test this scenario again.

For now I have added dmesg, Xorg.0.log and syslog. Maybe these help.

[Comment 8 Johannes Geiss 2010-10-23 11:36:40 UTC]

I forgot to mention, that I always patch include/drm/drmP.h:

diff -Naur linux/include/drm/drmP.h polaris/include/drm/drmP.h
--- linux/include/drm/drmP.h    2010-08-31 07:55:28.000000000 +0200
+++ polaris/include/drm/drmP.h  2010-08-31 08:01:41.000000000 +0200
@@ -1074,7 +1074,7 @@
 #ifdef __alpha__
 #define drm_get_pci_domain(dev) dev->hose->index
 #else
-#define drm_get_pci_domain(dev) 0
+#define drm_get_pci_domain(dev) 1
 #endif
 
 #if __OS_HAS_AGP

I change the drm_get_pci_domain(dev) 0 to 1 because my only one graphics card lies in domain 1 and hardware acceleration wouldn't work otherwise:

0001:01:08.0 VGA compatible controller: ATI Technologies Inc Radeon RV250 If [Radeon 9000] (rev 01)

I do this for a long time whenever I compile a new kernel but I don't think it has much to do with this bug because if I would leave it to 0 hardware acceleration would not work at all and older kernel versions all worked.

[Comment 9 Chí-Thanh Christopher Nguyễn 2010-10-31 18:19:18 UTC]

You are using radeonfb. This is not compatible with recent X and mesa.

Use KMS instead of radeonfb if you can.

[Comment 10 Johannes Geiss 2010-11-08 11:37:13 UTC]

Created attachment 253615 [details]
Wrong colours while SW rendering

I used KMS (i.e. I removed /etx/X11/xorg.conf). It worked, but I had no HW accelleration at all. Even if I remove the patch (see Comment #8). In xorg.conf is nothing except the Driver "radeon" and BusOption "PCI".

Furthermore the SW rendered graphics have wrong colours. See attachement "glxgears2.png".

[Comment 11 Matt Turner 2015-02-22 02:13:15 UTC]

There's not really anything Gentoo developers can do to solve this. Please file a bug upstream https://bugs.freedesktop.org/enter_bug.cgi?product=DRI if the problem persists.