Have rebooted 40 times without this issue with 3.13.0-44 (linux-
headers-3.13.0-44-generic, linux-image-3.13.0-44-generic and linux-
image-extra-3.13.0-44-generic).
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Actually, the patch posted above appears to be included in 3.13.0-44.73,
which is currently in proposed (also see: #1402853).
I suppose that warrants a 'Fix Released' status, though I'll leave that
to the Ubuntu kernel team.
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Still in 3.13.0-43-generic.
Furthermore, I have a strong suspicion this was fixed upstream in v3.18,
even though Wolfgang reported v3.14 worked fine for him.
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9e326f78713a4421fe11afc2ddeac07698fac131
Can anyone test and
reproducible with 3.13.0-40-generic
Ubuntu 3.13.0-40.69~precise1-generic 3.13.11.10
Dec 5 16:49:56 ubuntu kernel: [ 21.340139] [drm] AST 2300 detected
Dec 5 16:49:56 ubuntu kernel: [ 21.340183] [drm] dram 163200 1 16
0080
Dec 5 16:49:56 ubuntu kernel: [ 21.340211] [TTM] Zone
also hit this bug:
...
Oct 29 09:04:14 spb-office kernel: [8.299240] [drm] Initialized drm 1.1.0
20060810
Oct 29 09:04:14 spb-office kernel: [8.337211] mei_me :00:16.0: irq 45
for MSI/MSI-X
Oct 29 09:04:14 spb-office kernel: [8.537626] [drm] Memory usable by
graphics device
and here how it looks like on normal boot:
..
[drm] Initialized drm 1.1.0 20060810
Oct 29 09:09:30 spb-office kernel: [6.100409] mei_me :00:16.0: irq 45
for MSI/MSI-X
Oct 29 09:09:30 spb-office kernel: [6.166581] [drm] Memory usable by
graphics device = 2048M
Oct 29 09:09:30
I had the same problem with Ubuntu 12.04 and kernel 3.13.0-37-generic
This solution working:
http://askubuntu.com/questions/169912/fb-conflicting-fb-hw-usage-inteldrmfb-vs-efi-vga-removing-generic-driver
but is incomplette. That helped me to make permanent fix:
--- /etc/grub.d/10_linux
Also seeing the issue here (on occasion) w/ 3.13.0-37-generic:
fb: conflicting fb hw usage nouveaufb vs VESA VGA - removing generic driver
Console: switching to colour dummy device 80x25
BUG: unable to handle kernel NULL pointer dereference at 0138
IP: [8145d382]
Hi, I am also getting similar traces on boot, not every time. The
following is from a fresh net install on a ProLiant DL380 G7.
Oct 13 11:54:36 node21 kernel: [3.347415] [drm] radeon kernel modesetting
enabled.
Oct 13 11:54:36 node21 kernel: [3.347490] checking generic (e800
13)
