Have resolved the issue by installing yakkety kernel:
sudo add-apt-repository ppa:canonical-kernel-team/ppa
sudo apt update
sudo apt install linux-image-generic-lts-yakkety
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Why did you close the issue? I still have to power off my laptop instead
of suspending.
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https://bugs.launchpad.net/bugs/1581560
Title:
system crash when attaching external display
To
[Expired for xorg (Ubuntu) because there has been no activity for 60
days.]
** Changed in: xorg (Ubuntu)
Status: Incomplete => Expired
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I don't know why my attachments were removed, but this issue was fixed
by upgrading the kernel to http://kernel.ubuntu.com/~kernel-
ppa/mainline/v4.8-rc6/
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** Attachment removed: "dmesg.log"
https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1581560/+attachment/4729829/+files/dmesg.log
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Title:
Not sure whether it's related to xorg, but not intel driver or something
else.
Here is my dmesg when I just boot the laptop with the attached dock
station.
** Attachment added: "dmesg.log"
https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1581560/+attachment/4729829/+files/dmesg.log
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kay (kay-diam), it will help immensely if you filed a new report with Ubuntu by
ensuring you have the package xdiagnose installed, and that you click the Yes
button for attaching additional debugging information running the following
from a terminal:
ubuntu-bug xorg
Also, please feel free to
I have the same issue on Ubuntu 16.04 4.4.0-34-generic and Lenovo x260
If it was suspended with two screens, it would not wake up.
** Attachment added: "dmesg.log"
https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1581560/+attachment/4727743/+files/dmesg.log
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Rob Latham, it's always best to run the latest BIOS when debugging
issues as documented in
https://help.ubuntu.com/community/ReportingBugs#Hardware_bug_reports_.28linux_kernel.2C_xorg.2C_sound.2C_etc..29
. Could you please advise?
** Changed in: xorg (Ubuntu)
Importance: Undecided => Low
**
The 'bios-outdated-1.13' tag confuses me.
It's true that I am running (dmidecode says...) Vendor: LENOVO Version:
N14ET29W (1.07 )
but there is no mention of display fixes in the release notes that
accompany n14ur12w (1.13).
I can update my bios but wanted to understand if the tag addition was
** Tags added: bios-outdated-1.13
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Title:
system crash when attaching external display
To manage notifications about this bug go to:
I tried an upstream kernel ( 4.4.12-040412-generic #201606011712 ).
Attaching after suspend/resume no longer results in a crash.
The screen frequently fails to restore on the first try. dmesg has
these lines in that case:
[drm:intel_mst_disable_dp [i915]] *ERROR* failed to update payload -22
Sometimes, my laptop does not freeze. Just now I was able to see the
external display upon my second attempt, and found 8 backtraces in
dmesg:
[26529.773617] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* failed
to enable link training
[26529.776319]
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