I also found this bug using the HWE stack.
System76 Lemur 6 (i7-6500U CPU Skylake GT2 HD520) running 16.04.3 LTS
Flicker occurs on return from black monitor to screens after screen has
been turned off. Worse with a second monitor plugged in. Resolution is
to click on the workplace switcher and
I followed Max Goodman's suggestion
(https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1634449/comments/42)
and that fixed it for me as well.
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** Tags added: hwe xenial
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Title:
Black flicker when leaving monitor
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This is likely a problem with the power saving mode in the kernel driver
i915.
https://wiki.archlinux.org/index.php/intel_graphics
I have created a file i915.conf in /etc/modprobe.d/
contents of i915.conf:
options i915 enable_rc6=0
then the problem has disappeared for me.
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I now have this problem ever since the HWE kernel has been installed in
16.04.2.
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Title:
Black flicker when leaving monitor
To manage
@Max:
On Ubuntu 16.04 there's no xorg.conf in /usr/share/doc/xserver-xorg-
video-intel/, only these files
changelog.Debian.gz copyright NEWS.gz README README.Debian
My xorg.conf with the bug:
Section "Device"
Identifier "Intel Graphics"
Driver "intel"
Option
This appears to be a problem with the modesetting Xorg driver. After
switching back to the intel driver (sudo cp /usr/share/doc/xserver-xorg-
video-intel/xorg.conf /etc/X11/) I haven't seen this recur yet.
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I am experiencing this issue as well on 16.10 on my X1 Carbon 3rd gen
(Intel(R) Core(TM) i7-5600U CPU @ 2.60GHz / HD Graphics 5500 (rev 09)).
Tried mainline kernels 4.9.9, 4.9.10, and 4.10.0-997-drm-intel-next, and
reproduced the issue on all. Also tried pinning libdrm2/linux-firmware
I'm on a Lenovo T450s and have this problem immediately after updating
to 16.10. I believe I'm running 4.8.0-34-generic kernel (standard
default repos) and the problem still exists. So I'm without a
workaround. If there is a fix other than default update, can someone
spell it out?
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Similarly to others, after updating 4.8.0-30-generic kernel, the issue
appears to be fixed on my Intel Core i7 6700K desktop.
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Title:
Black
Following up with comment #32, Linux 4.8.0-30-generic from the default
repositories does appear to have resolved the problem.
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Title:
Black
But @MisterZ says this "I had no issues whatsoever on Ubuntu 16.04 LTS
with kernel 4.4.x".
I have kernel version 4.4.0-53-generic.
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Same as @MisterZ, the problem is fixed for me with the latest updates.
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Title:
Black flicker when leaving monitor
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Hello Linux Community,
I just installed Ubuntu 16.04 a couple of days ago on my new Lenovo T560
laptop, I have an other 27 inch display connected to my docking station.
I am also feeling an issue with black line flickering around at random
time whenever I move cursor on the Chrome.
I have dual
The latest intel drivers are available for Ubuntu 16.10 now.
https://download.01.org/gfx/repos/ubuntu/
https://download.01.org/gfx/ilg-config.cfg
After updating to stable kernel 4.8.0-30 it solved the problem for me. I
don't need to use the drm-intel-nightly kernel 4.9.x anymore.
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Same issue: two monitors connected.
When moving the cursor from a monitor to another, the first monitor becomes
black and sometimes it remains black until I unplug and plug it again.
I have a HP EliteBook 850 G3 with Intel HD Graphics 520 (Skylake GT2).
Are there any other details I could supply
For anyone else just looking for a workaround, I've had success with
this arrangement. I don't really know what I'm doing, so imitate at your
own risk.
Hardware:
Dell XPS 13 9350 Developer Edition
Cable Matters 201016
Dell P2415Q
Distribution:
Ubuntu 16.10
Linux 4.9 from zesty:
Asked for the 16.10 drivers from Intel and they are on it's way.
https://01.org/comment/2783
Hopefully this will fix some of the issues we are facing with this.
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Same problem here. Using triple screen (laptop + 2 external monitors) on
a Lenovo ThinkPad t460s.
Monitor on display port is turning black for 2-5 seconds on cursor
movement or focus changes with alt+tab.
OS: Ubuntu 16.10 amd64
Kernel: 4.8.0-26
CPU: Intel Core i7-6600U
GPU: Intel HD Graphics
On my new desktop machine I'm having dual monitor setup. Sometimes one
of monitors gets black for a second and then shows image again - this
happens when mouse cursor goes from one display to another. Also, when
running an OpenGL application, if it starts on one specific monitor, the
whole screen
On my new desktop machine I'm having dual monitor setup. Sometimes one
of monitors gets black for a second and then shows image again - this is
especially visible on logon screen. Also, when running an OpenGL
application, if it starts on one specific monitor, the whole screen
flickers quite badly
Same issue here on a Dell Latitude E5470.
OS: Ubuntu 16.10
Kernel: 4.8.0-22-generic
CPU: Intel(R) Core(TM) i7-6600U CPU @ 2.60GHz
GPU: Intel Corporation HD Graphics 520 (rev 07)
Xorg (package version): 1:7.7+13ubuntu4
Also it's very intermittent, hard to forcefully reproduce. I was doing a
test
Can someone reopen this bug, please? This is clearly not a duplicate of
bug #1626935.
** This bug is no longer a duplicate of bug 1626935
[yakkety] desktop is black and/or flickering after plugging in a second
monitor
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Never mind, I removed it myself (I wasn't aware that I could do that :D)
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Title:
Black flicker when leaving monitor
To manage notifications
*** This bug is a duplicate of bug 1626935 ***
https://bugs.launchpad.net/bugs/1626935
I've been seeing this as well (currently testing on Linux Mint Cinnamon)
I have an Asus UX501V Skylake laptop, with secondary display connected
via HDMI.
A little black square with a few pieces of white
*** This bug is a duplicate of bug 1626935 ***
https://bugs.launchpad.net/bugs/1626935
I agree it's different. However 4.8.0-997 resolved the issue for me.
I think this should be reopened as well
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*** This bug is a duplicate of bug 1626935 ***
https://bugs.launchpad.net/bugs/1626935
I tried various kernels, also 4.4.19-040419, which previously solved the
problem for me, but doesn't do so now. I will try 4.8.0-997 again to see
if it solves the issue. I'm on a Thinkpad X1 Carbon (first
*** This bug is a duplicate of bug 1626935 ***
https://bugs.launchpad.net/bugs/1626935
I also have this problem, and I don't think it's a duplicate:
* The entire external screen turns black intermittently
* The background image is not affected
* The laptop screen does not flicker
Please
*** This bug is a duplicate of bug 1626935 ***
https://bugs.launchpad.net/bugs/1626935
Thank you for taking the time to report this bug and helping to make
Ubuntu better. This particular bug has already been reported and is a
duplicate of bug 1626935, so it is being marked as such. Please
** Changed in: linux (Ubuntu)
Importance: Undecided => Medium
** Changed in: linux (Ubuntu)
Status: Confirmed => Triaged
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Title:
It seems to be working now. I'll test it for a day and will get back to
you
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Title:
Black flicker when leaving monitor
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a bit more context; 4.8 attempted to fix watermark issues but regressed
some, stable updates will hopefully fix them
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Title:
Black flicker when
Note that these are always hardware specific. You have Skylake, which is
known to be broken still on released kernels. Please test latest drm-
intel-next mainline build from
http://kernel.ubuntu.com/~kernel-ppa/mainline/
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apport information
** Tags added: apport-collected yakkety
** Description changed:
Sometimes, when moving cursor from one monitor to the other, the
external monitor turns black and gets back on again.
The hardware is Dell Latitude E5470 with Docking Station and monitor
connected via
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