X.org hanging under 7.2-PRERELEASE

Robert Noland rnoland at FreeBSD.org
Fri Mar 27 23:34:49 PDT 2009

On Fri, 2009-03-27 at 19:44 -0700, David Johnson wrote:
> I update -STABLE about once a week. On Wednesday I update, and subsequently 
> started getting hangs and lockups. This happens only when DRI is enabled. When 
> DRI is disabled there is no problem. The seriousness can vary. Sometimes I can 
> ssh in from another machine to reboot, other times I can't. The last time it 
> hung, top showed X.org at 100.0% CPU. The previous time it was stuck with in a 
> "drmwtq" state.  The hang always occurs within twenty minutes of starting X.

Actually, the commits that I might have expected to cause this, haven't
been MFC'd yet.  You probably did pick up the r6/7xx code in this
update.  I also made an error in the GART mapping code, but that should
only effect pci(e) based radeons.

It could also be related to the 6.12.1 ati driver.  AGP mode 4x is
always suspect as well, you might try reducing that to 2 or 1 and see if
the problems go away.

As for checking out an earlier release, with csup you just have to
specify a date that you want to checkout.  See man csup and reference
the section titled CHECKOUT MODE.


> Particulars:
> FreeBSD 7.2-PRERELEASE #2: Thu Mar 26 19:21:26
> xf86-video-ati-6.12.1 (with Radeon X1550)
> kdelibs-4.2.1_1
> Relevant portions of my xorg.conf:
> Section "Module"
>     Load  "extmod"
>     Load  "dbe"
>     Load  "dri"
>     Load  "glx"
>     Load  "xtrap"
>     Load  "freetype"
> EndSection
> Section "Device"
>     Identifier  "Card0"
>     Driver      "radeon"
>     ...
>     Option      "AGPMode" "4"
>     Option      "RenderAccel" "on"
>     Option      "AccelMethod" "EXA"
> EndSection
> I have had no prior problems with -STABLE. I have an Intel Q45 chipset, so I 
> need to run -STABLE, and don't have the option of going back to -RELEASE. Is 
> there any easy way to go back to an earlier -STABLE?

Robert Noland <rnoland at FreeBSD.org>
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