*** This bug is a duplicate of bug 761065 ***
https://bugs.launchpad.net/bugs/761065
I just tried the kernel AceLan Kao posted in comment #13 and no luck.
Connecting an external monitor causes a system lockup on my system. I
went back to the 2.6.39 kernel in kernel-ppa and everything works
On Fri, Apr 29, 2011 at 06:13:11AM -, Jeff Olson wrote:
*** This bug is a duplicate of bug 761065 ***
https://bugs.launchpad.net/bugs/761065
I just tried the kernel AceLan Kao posted in comment #13 and no luck.
Connecting an external monitor causes a system lockup on my system. I
*** This bug is a duplicate of bug 761065 ***
https://bugs.launchpad.net/bugs/761065
** This bug has been marked a duplicate of bug 761065
[Sandybridge] Spurious *ERROR* Hangcheck timer elapsed... blt ring idle
messages in dmesg when using compiz
* You can subscribe to bug 761065 by
Hi,
This is the new natty kernel I cherry picked 4 patches from .39 kernel.
Please try it and check if this kernel fix the problem, thanks.
http://people.canonical.com/~acelan/bugs/lp753189/
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Looks like this is another symptom of bug #761065
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https://bugs.launchpad.net/bugs/762855
Title:
[sandybridge-m-gt2+] Display on external monitor (vga) is
Dan,
I think the problem is solved by the mainline kernel, you could try the latest
kernel from the following link.
http://kernel.ubuntu.com/~kernel-ppa/mainline/daily/current/
** Changed in: linux (Ubuntu)
Assignee: (unassigned) = AceLan Kao (acelankao)
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Yes! It works! I can't even tell you how relieved I feel without
sounding like a lunatic.
Here are the details of the experience:
1. added the ppa:kernel-ppa/ppa repository to apt-get
2. installed linux-generic and linux-generic-headers version 2.6.39-0.4~20110419
3. logged in using the no
For the record, I tried out the intel driver from the elderberry ppa
using the older kernel (the one from natty beta2) and it did not fix the
problem. I still got:
[ 63.990093] [drm:ironlake_crtc_disable] *ERROR* failed to disable transcoder
[ 164.540158] [drm:intel_dp_complete_link_train]
Hi Dan,
Good to hear the mainline kernel solved it. Would you be willing to do
some additional testing to isolate which specific patch fixed it? If
so, the kernel team might be able to backport that fix to include in
natty.
Directions for isolating kernel patches via git bisection are
Bryce,
I'll do the bisect when I available.
** Changed in: linux (Ubuntu)
Status: Incomplete = In Progress
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https://bugs.launchpad.net/bugs/762855
I gave it a shot, but I must admit I'm a bit lost since I'm straddling
between two kernel versions 2.6.38 and 2.6.39. I'm not quite sure where
to go. I arrived at git://kernel.ubuntu.com/ubuntu/ubuntu-oneiric.git.
I installed various kernel builds from the 2.6.39 line. Here are my
results:
Hi Dan,
You mentioned in your description specifically that the issue is seen as
of the 2011-04-16 nightly; by this comment do you mean to imply that
prior to 4-16 this issue is not reproducible? If that is the case,
please tell me the most recent working version; I can then examine what
I experience the same problem in Ubuntu 10.10 (Maverick) and 11.04 Beta2
(Natty). I tried the nightly because it included fixes for the touchpad
and sound. However, the display problem remained. I don't think it works
in any very of Ubuntu to date.
I'll try your suggestions and report back.
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** Also affects: linux (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/762855
Title:
[sandybridge-m-gt2+] Display on
dmesg shows:
[ 527.569922] [drm:i915_hangcheck_ring_idle] *ERROR* Hangcheck timer
elapsed... blt ring idle [waiting on 34739, at 34739], missed IRQ?
[ 1102.501179] aufs au_new_inode:412:system-config-p[3827]: Warning:
Un-notified UDBA or repeatedly renamed dir, b1, squashfs, lib-dynload,
Also:
[ 1848.479911] [drm:i915_hangcheck_ring_idle] *ERROR* Hangcheck timer
elapsed... blt ring idle [waiting on 377962, at 377962], missed IRQ?
[ 1955.746330] [drm:intel_dp_complete_link_train] *ERROR* failed to train DP,
aborting
[ 1956.152692] [drm:intel_dp_i2c_aux_ch] *ERROR* too many
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