On 22/07/11 10:41, lee wrote:
Perhaps CONFIG_DEBUG_FS is not set for the kernel you are using? I can
mount and unmount it just fine, and it shows up in the output of
"mount".
Does it show up when trying to mount it gives you the error message that
it's already mounted? If it does, I'd wonder why it's already mounted.
I have CONFIG_DEBUG_FS=y on the kernel config file in /boot so I guess
it's configured.
I just discovered, by watching fstab, that I had modified this to try to
use the Switcheroo mechanism (switching GPU's), like this:
none /sys/kernel/debug debugfs defaults 0 0
which I'm not using because I came to the conclusion it wasn't fitted to
my machine.
So I guess this wouldn't allow use debugfs. I umount'd and now I could
mount it as instructed.
Did you install intel_gpu_dump by downloading it or by installing the
package intel-gpu-tools? Did it write something to intel_gpu_dump.txt?
I installed xserver-xorg-video-intel-dbg using synaptics package manager
and it asked to install intel-gpu-tools as a dependency. It didn't write
anything after the freeze.
I'll interrupt this writing here to trigger the bug again and use
intel_gpu_dump to see what happens.
So, I changed fstab, reboot, mounted debugfs, triggered the freeze,
accessed by ssh and sudo intel_gpu_dump which produced the same error as
before.
Looked at dmesg, Xorg.0.log and /sys/kernel/debug/dri/0/i915_error_state
and saw nothing relevant there. Furthermore, I looked at
https://wiki.ubuntu.com/X/Troubleshooting/Freeze which says that a
backtrace on Xorg.0.log is a non-symptom because this isn't an X crash.
So, I guess the debugging xserver won't give any results.
So, I guess the only thing that could give us information is
intel_gpu_dump which I'm still not able to launch. Any idea how to do it?
Anyway, I had already reported the bug as #635039 but I wanted give some
more information, which I still can't.
Thank you for your time,
rgds
jss
--
To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org
with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
Archive: http://lists.debian.org/blu0-smtp15681bbb924e2dc6e9e3b76d0...@phx.gbl
