Thanks, I'll try to get around to it. So far I'm still running Maverick
as it's the latest version with a classic Gnome interface and a graphics
driver that works on both my computers, so I can't tell for sure about
later releases.
Btw, the Wiki link is dead, has the page been moved?
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...sorry, forgot to mention, I mean the X troubleshooting article. The
Kernel article works.
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https://bugs.launchpad.net/bugs/773997
Title:
Garbled X11 screen output
To manage
Works for me too. I've tried
#echo N /sys/module/drm_kms_helper/parameters/poll
manually every time I had the issue, and that would fix it. Now I've
automated the step. Not sure if it has any side effects, though.
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I've installed the 3.10 kernel from
http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.10-saucy/
(since I don't like testing on a productive system with non-deb installs
that may be hard to uninstall cleanly). According to version number and
file time, it should contain the fix (please correct me
Mouse responsiveness looks OK so far, but there seems to be a regression
concerning WiFi/Bluetooth.
When the system comes up, both are disabled and cannot be enabled using
the hardware switch (touch button above the keyboard on the HP 6930p).
WiFi is reported disabled by hardware switch in Gnome
I've tested the 3.10 kernel from the Ubuntu kernel PPA for some more
time, and haven't had any more issues with mouse responsiveness, so I
guess that's resolved. There's just the issue that I have to manually
re-enable Bluetooth and WiFi on every startup.
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Any news yet on when there's going to be an official kernel for Precise
that contains the fix?
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https://bugs.launchpad.net/bugs/957298
Title:
Mouse is very
** Package changed: ubuntu = xorg (Ubuntu)
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https://bugs.launchpad.net/bugs/1418679
Title:
Multiline text controls occasionally get corrupted on refresh
To manage notifications
Attached is another screenshot from Eclipse. This one happened after
scrolling. The first four lines of the command_new function body are
missing completely (the second line of that block is empty anyway,
however), the fifth line is clipped. Also note the discoloration of the
first two missing
After taking the screenshot, the Save dialog obstructed the corrupt part
of the window, and after the dialog disappeared the window was rendered
correctly again. Anything that causes a re-render (obstruct and re-raise
window, or select text) will restore proper rendering.
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It's still an issue on my system; I'll test the dev release and report
here. Since it's a sporadic issue, please allow some time for testing.
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Haven't tested the dev release yet but upgraded to Ubuntu MATE 15.04
since, and the issue is still there.
** Changed in: xorg (Ubuntu)
Status: Expired => Incomplete
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Public bug reported:
Occasionally, the internal laptop display goes black for a few seconds,
then comes back to life. The external display stays on. It looks as if
power management were kicking in by error but affecting only the
internal display.
When I’m working with the external display, I
Update on behavior: the last few times the internal display went black,
I did not touch the keyboard and mouse at all, and the display came back
after a few seconds. (Tested with the laptop in the port replicator and
an external display connected via the DP port.)
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I upgraded to 18.04 last week. So far none of the screen issues (black
screen or image corruption) has reappeared; I will post an update if
anything comes up.
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Public bug reported:
Steps to reproduce:
1. Enable the German keyboard layout.
2. Open a text editor of your choice.
3. Press AltGr and + (second key after P), then press a.
4. Press AltGr + Shift and +, then press a.
Expected behavior:
Key acts as a dead key, the key sequences produce ã and
I noticed another issue recently: when the device displays woke up after
a period of inactivity, the picture of the external (!) display was
stretched vertically by a factor of 2, with the bottom half missing. I
took a screenshot, but that looked OK and didn’t reflect what I actually
saw.
Also,
Update done. I’ll keep an eye on this and report back if I encounter the
issue again (or do not encounter it for a longer time—being a sporadic
bug, it’s difficult to tell if it’s gone away for good).
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Well, that didn’t take long: screen just went black again for somewhere
around a second. Let me know if you need further input from me.
BTW: currently working without a dock, with an external screen attached
via DP (which has also experienced the bug before the update)—so the
dock doesn’t make a
Re 1: the issue started to happen after I moved the hard disk to the 840
G1 (from a 6930p), which was around August/September. Updates usually
get installed within a day (unless I have only limited Internet access,
which was not the case when I switched laptops), thus the system should
have been
apport information
** Attachment added: "Dependencies.txt"
https://bugs.launchpad.net/bugs/1715749/+attachment/5052598/+files/Dependencies.txt
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apport information
** Attachment added: "CurrentDmesg.txt"
https://bugs.launchpad.net/bugs/1715749/+attachment/5052597/+files/CurrentDmesg.txt
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apport information
** Tags added: apport-collected ubuntu
** Description changed:
Occasionally, the internal laptop display goes black for a few seconds,
then comes back to life. The external display stays on. It looks as if
power management were kicking in by error but affecting only the
apport information
** Attachment added: "XorgLogOld.txt"
https://bugs.launchpad.net/bugs/1715749/+attachment/5052612/+files/XorgLogOld.txt
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apport information
** Attachment added: "Xrandr.txt"
https://bugs.launchpad.net/bugs/1715749/+attachment/5052613/+files/Xrandr.txt
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apport information
** Attachment added: "xdpyinfo.txt"
https://bugs.launchpad.net/bugs/1715749/+attachment/5052614/+files/xdpyinfo.txt
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apport information
** Attachment added: "XorgLog.txt"
https://bugs.launchpad.net/bugs/1715749/+attachment/5052611/+files/XorgLog.txt
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apport information
** Attachment added: "Lsusb.txt"
https://bugs.launchpad.net/bugs/1715749/+attachment/5052603/+files/Lsusb.txt
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Title:
apport information
** Attachment added: "LightdmGreeterLogOld.txt"
https://bugs.launchpad.net/bugs/1715749/+attachment/5052601/+files/LightdmGreeterLogOld.txt
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apport information
** Attachment added: "JournalErrors.txt"
https://bugs.launchpad.net/bugs/1715749/+attachment/5052600/+files/JournalErrors.txt
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apport information
** Attachment added: "DpkgLog.txt"
https://bugs.launchpad.net/bugs/1715749/+attachment/5052599/+files/DpkgLog.txt
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apport information
** Attachment added: "Lspci.txt"
https://bugs.launchpad.net/bugs/1715749/+attachment/5052602/+files/Lspci.txt
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Title:
apport information
** Attachment added: "MonitorsUser.xml.txt"
https://bugs.launchpad.net/bugs/1715749/+attachment/5052604/+files/MonitorsUser.xml.txt
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apport information
** Attachment added: "ProcCpuinfoMinimal.txt"
https://bugs.launchpad.net/bugs/1715749/+attachment/5052606/+files/ProcCpuinfoMinimal.txt
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** Attachment added: "ProcEnviron.txt"
https://bugs.launchpad.net/bugs/1715749/+attachment/5052607/+files/ProcEnviron.txt
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** Attachment added: "ProcCpuinfo.txt"
https://bugs.launchpad.net/bugs/1715749/+attachment/5052605/+files/ProcCpuinfo.txt
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apport information
** Attachment added: "ProcInterrupts.txt"
https://bugs.launchpad.net/bugs/1715749/+attachment/5052608/+files/ProcInterrupts.txt
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** Attachment added: "ProcModules.txt"
https://bugs.launchpad.net/bugs/1715749/+attachment/5052609/+files/ProcModules.txt
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apport information
** Attachment added: "UdevDb.txt"
https://bugs.launchpad.net/bugs/1715749/+attachment/5052610/+files/UdevDb.txt
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I'm currently working without an external display and without a docking
station/port replicator, and the screen just went black for a couple of
seconds. The system had been running for 1–2 hours at the time.
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which is
I just set the screen timeout to Never; dimming was already disabled. I
did this only for the AC profile, not the battery profile, as I’m on AC
power most of the time. I’ll report back if the screen goes black again
(or if it doesn’t happen for a while).
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And the screen just went black again. I haven’t rebooted since I changed
the settings; I will report if I still experience issues after a reboot,
just to be sure.
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And the issue described in comment#37 is also back. This time, however,
after doing Ctrl+Alt+F1, everything was black (except for the cursor
blinking on the internal display), and I was unable to switch back to
the GUI with Ctrl+Alt+F7; I ended up having to cold boot the system
using the power
The black screen issue reappeared on 18.04 sometime last week, after two
completely trouble-free months, and it is quite frequent again. I
haven’t done and in-depth diagnosis or troubleshooting so far. The
flicker issue hasn’t appeared since I upgraded.
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After today’s updates, I am seeing another strange issue: whenever all
displays go out due to inactivity and I touch the keyboard or mouse
again, the internal display starts to flicker. It looks as if the entire
image is shifted by some 25% of its width to one side, then to the other
(with the
Forgot to add, the laptop’s currently docked with an external display on
DisplayPort.
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Title:
Intermittent black screen on HP EliteBook 840
18.04 LTS is just around the corner and I will be upgrading soon. Is
there any more information you’d like me to gather while still on 16.04?
Please let me know; otherwise I will post any news on how this behavior
also affects 18.04 once I’ve upgraded and used it for a while.
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I am referring to package updates, still on 16.04, whatever was made
available on the repos in the last ~24 hours before comment #33. (Is
there an install log which will tell me what was updated when?)
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For the issue in #37, I was able to restore the external display by
undocking and re-docking the laptop.
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Title:
Intermittent black screen
Just had a look at my own settings: I have "Dim display when idle"
unchecked in the AC power tab, checked in the Battery tab. I am still
getting a dark screen every now and then, even though I mostly work on
AC power.
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@Maik Schulze did that change anything? are you still getting the error?
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Title:
Intermittent black screen on HP EliteBook 840 G1
To
I still have the HP 840 G1, currently on 22.04. I’ll keep an eye on the
black screen issue and will report back as soon as it happens again.
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