Messages in this thread | | | Date | Thu, 7 Apr 2005 14:49:33 +0300 | From | Matti Aarnio <> | Subject | Re: [bk tree] DRM add a version check.. for 2.6.12 (distro kernel maintainers + drm users plz read also...) |
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Dropping Linus off this list...
On Mon, Mar 28, 2005 at 12:40:16PM +0100, Dave Airlie wrote: > Hi Linus, > > In order to stop someone loading a drm driver on a wrong core this patch > makes the driver pass in the version is was built against, this mainly > useful for people using the DRI snapshots for cards that aren't their > normal cards... > > Also for anyone who maintains a kernel for distros or builds their own > please build your kernels with CONFIG_DRM=m not =y, from 2.6.11 onwards.. > as if you build with =y then DRI snapshots will no longer work..
I tried 2.6.12-rc2 which includes this patch, and I get DRM failures here, which causes application and X to hang. (I got failures with 2.6.11 also.)
When accessing the machine from network, I can see that either application, or X itself is running as close as possible to 100% CPU utilization.
Symptom is such that the application, or X-server, is executing an ioctl() on a file-handle that has node: /dev/drm/card0 open in r/w mode.
Following is from memory:
ioctl(5, something, something) -- Received ALARM(0) -- ioctl(5, something, something) -- Received ALARM(0) --
that repeats as fast as possible.
I have now Radeon 9200SE card with 128 MB memory (I used to have Matrox MGA G400 AGP with 8 MB memory - no room for anything but pixel maps), but then I absolutely needed accelerated 3D, and had to go and get a "modern" card.
System is running Fedora Core 4 Test-1 application space codes along with fresh baseline 2.6.11 + 2.6.12-rc2 patchset ( = "2.6.12-rc2" ).
I observed that xscreensaver-demo running "GLForestFire" is reliably able to hangup the desktop within minutes, IF media-automounter is snooping around in /dev/cdrom and there is some disk. (I had FC4test1 rescue disk in there. )
With disk taken out, the system ran some 8 hours without a glitch.
Nevertheless, I then tried some fun with TuxRacer, and was able to get the same drm hangup after an hour or so.
ANY ideas ?
/Matti Aarnio - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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