Red Hat Bugzilla – Bug 51185
kernel oops with DRI enabled in 4.1.0-0.9.11 + kernel 2.4.7-0.8
Last modified: 2005-10-31 17:00:50 EST
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User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:0.9.3) Gecko/20010802
Description of problem:
Starting X with DRI enabled in XF86Config-4 oopses kernel 2.4.7-0.8
Steps to Reproduce:
1. install kernel-2.4.7-0.8 , XFree86-4.1.0-0.9.11
2. Load DRI in /etc/X11/XF86Config-4
Actual Results: Kernel oopses ; system hangs (SysRq-Raw doesn't work ,
Expected Results: X should start.
This is reproducable on 2 completely different machines (desktop PIII-450
VIA + Matrox G400 , portable IBM A21p PIII-850 440BX + ATI Mobility 128).
OS Versions :
desktop : clean 7.1 with updates
portable : 7.1 with updates and some Rawhides (pre-Roswell)
On both systems :
glibc : 2.2.3-19.1
xinitrc : 3.15-1
I'm not sure whether this should be posted in the kernel and/or Roswell bug
components too ?
kernel oops --> priority = high ?
That kernel does not have XFree86 4.1.0 DRI in it. Roswell does not
have DRI support for XFree86 4.1.0 at all. Future releases of the
kernel *will* have proper DRI support, however there were various
issues including security issues that needed to be resolved before
including the new DRM in our kernel.
DRM is now integrated into the Rawhide kernel, however there may or
may not be some remaining issues left. I'll let Arjan comment on
this before closing the bug report with RAWHIDE.
As I noted, I'm *not* running Roswell ,just some assorted Rawhides on one of the
No DRI ?
rpm -qi kernel-2.4.7-0.8 --changelog reports:
* Sat Aug 04 2001 Arjan van de Ven <firstname.lastname@example.org>
- Added DRI for XFree 4.1
I reverted back to Xfree86-4.1.0-9.1, same lockups : I suppose it is a kernel issue.
"Load DRI" in XF86Config-4 autoloads the "r128.o" module (usage=1) and locks up.
If I disable the "Load DRI" and modprobe the r128.0, X loads and usage=0.
As a sidenote : with 2.4.7-0.8, I'm getting random-interval screen glitches on
my A21p LCD (1600x1200x16), whether or not r128.o is loaded ; something to do
with agpgart ?
-0.8 showed a bug in the original XFree 4.1 DRM code (the kernel part) which got
fixed in kernel -0.9.1 which should appear in rawhide soon.
What Arjan says is correct. You should be using kernel
2.4.7-0.11.1 or later for DRI support. Newer kernel the