Okay, I tested the daily build of xenial (ubuntu version) this morning.
It is using kernel 4.3.0-2, and I can confirm that this detects the
monitor without problem.
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You mean upgrade to the whole distribution or just the kernel? This
issue is happening on my main work laptop so I need reasonable stability
so I'm not sure I want to use a pre-alpha distro.
I think for now I am fine using the mainline 4.3 kernel which works
fine, or the 4.2.0-rc8 one which I
Christopher, I have finished the bisection (man, that took a long time!)
and I have attached the output.
The summary is that commit 4efa83c8c786ab7ec7982e3dd348cb7e7ecbeb04 is
the one that fixes things. This makes sense because I am attaching my
external monitor via a DP->VGA dongle, mentioned in
Dear Christopher,
I updated the BIOS today. Ouput from the command you requested is:
$ sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date
[password]
A07
11/11/2015
The problem persists, so I have marked this as Confirmed, per your
request.
As I stated in the initial post,
Dear Christopher,
Thank you for the suggestion. Unfortunately, I won't be able to do this
for at least a week because Real Life™ is too busy. (Also, I've not
updated a BIOS before so I am cautious about the idea.)
But if I can do it some time in the next week or two I shall update the
bug.
Done, see here:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1520751
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https://bugs.launchpad.net/bugs/1518976
Title:
miniDisplay VGA adapter doesn't work after switching to
Done, please see here:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1520751
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https://bugs.launchpad.net/bugs/1517465
Title:
Resolution too low on external monitor through
Public bug reported:
On xubuntu 15.10.
Kernel version 4.2.0-18-generic x86_64 does not detect an external
monitor when it is connected via the minidisplay port. Using xrandr, I
can force output to the monitor, but the maximum resolution is 1024x768
(I think). Hardware is a Dell XPS 13.
I was having a problem rather similar to this (although on different
hardware). I found that installing a 4.3.xx version kernel from the
mainline builds described above fixed the problem.
(Miraculously, I don't think it broke anything else either!)
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I was having a problem rather similar to this (although on different
hardware). I found that installing a 4.3.xx version kernel from the
mainline builds described above fixed the problem.
(Miraculously, I don't think it broke anything else either!)
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Wahoo!! The vivid-proposed kernel seems to fix the issues for me too.
Thanks to all who worked on this: Much appreciated.
Just out of interest, is it any clearer yet what the problem was?
Thanks again.
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I am not aware that anyone is working on it. I suspect that if it's a
driver issue then it would require the xorg people to fix it, not
xubuntu.
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https://bugs.launchpad.net/bugs/1452318
Is there any way to revert the xorg driver to an old version that does
work?
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https://bugs.launchpad.net/bugs/1452318
Title:
Faulty behavior when resuming from suspend
To manage
Interesting. I tried openbox and the bug is there with that window
manager.
Does gnome-shell use hardware acceleration? If so, then that might be
the common thread which links to my observations about google-chrome
above.
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I noticed there was an update to the intel driver earlier this week for
my xubuntu system. It fixed one other problem I'd been having (slightly
buggy playback of video in VLC) but doesn't seem to have helped the
issues in this bug.
Any of the gurus fancy taking a crack at it?
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In case it's worth anything, the following may help to diagnose the
problem.
When I resume from suspend and lose desktop icons, panel icons, and
random bits of text, I find that starting google chrome (or even just
changing tab in an already open browser) will allow the screen to redraw
when I
Moritz, did you try the UXA fix? If this makes your machine work well
then this may help to confirm that we are experiencing the same issue.
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Initial assessment of source of issue appears to be wrong. xorg intel
driver seems a much more likely place.
** Package changed: pm-utils (Ubuntu) = xserver-xorg-video-intel
(Ubuntu)
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Initial assessment of source of issue appears to be wrong. xorg intel
driver seems a much more likely place.
** Package changed: pm-utils (Ubuntu) = xserver-xorg-video-intel
(Ubuntu)
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I have managed to find some sort of work-around for this. It turns out the
problem is in the xorg intel driver, not pm-utils. Switching the 2D
accelleration mode from SNA to UXA as detailed here:
https://wiki.archlinux.org/index.php/Intel_graphics#SNA_issues
and here:
I have managed to find some sort of work-around for this. It turns out the
problem is in the xorg intel driver, not pm-utils. Switching the 2D
accelleration mode from SNA to UXA as detailed here:
https://wiki.archlinux.org/index.php/Intel_graphics#SNA_issues
and here:
I am also experiencing this kind of issue. For me, the problems manifest as
buggy display of video when VLC is in windowed mode. (Fullscreen mode is fine.)
Also, when I suspend my laptop, the display is partially corrupted when I
resume. See here:
I found that it was sufficient to install only the texlive-lang-cjk
package, rather than the whole of texlive.
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https://bugs.launchpad.net/bugs/1449875
Title:
ghostscript fails on some
Public bug reported:
Waking from suspend, everything seems normal, except the graphical
elements and text on my desktop are not drawn properly. Sometimes,
moving the mouse over icons can cause them to be redrawn, sometimes not.
It appears not to matter how I initiate the suspend (e.g. by closing
Public bug reported:
Waking from suspend, everything seems normal, except the graphical
elements and text on my desktop are not drawn properly. Sometimes,
moving the mouse over icons can cause them to be redrawn, sometimes not.
It appears not to matter how I initiate the suspend (e.g. by closing
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