This seems to be fixed, indeed.
I can't reproduce this issue anymore. I'm currently on kernel version 4.4.0-38.
I'm marking this as fixed, then.
** Changed in: linux (Ubuntu)
Status: Incomplete => Fix Released
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Bugs,
Hmm... this issue hasn't been happening lately. Maybe one of the recent kernel
updates fixed this.
I'll wait a few more days before I mark this as fixed, to see if this wasn't a
fluke.
As for the freezing/shutting down problems I mentioned before, they
started happening in Windows as well, so I
OK, I'll try, but I can't promise anything.
But I must say, after I removed and reinstalled the NVidia driver through
software-properties-gtk, Ubuntu has shut down or completely frozen several
times.
I'm going to "autoremove --purge" the driver and reinstall it to see if that
stops this.
--
Bruno Nova, the next step is to fully reverse commit bisect from kernel
4.4 to 4.8-rc5 in order to identify the last bad commit, followed
immediately by the first good one. Once this good commit has been
identified, it may be reviewed for backporting. Could you please do this
following
I tested a few more kernels.
The bug is also fixed in v4.6-rc1.
Don't know about earlier kernels.
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https://bugs.launchpad.net/bugs/1585329
Title:
Sometimes a black rectangle appears
This bug has some similarities with this one:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1553503
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https://bugs.launchpad.net/bugs/1585329
Title:
Sometimes a black rectangle
This bug has some similarities with this one:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1553503
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https://bugs.launchpad.net/bugs/1585329
Title:
Sometimes a black rectangle
I had an old hard drive around, so I installed Ubuntu to it.
I installed the latest kernel from that link (v4.8-rc5), and the bug is fixed
there.
I haven't installed the NVidia proprietary drivers.
$ uname -a
Linux bruno-mitsai 4.8.0-040800rc5-generic #201609041832 SMP Sun Sep 4 22:34:01
UTC
Bruno Nova, in order to allow additional upstream developers to examine the
issue, at your earliest convenience, could you please test the latest upstream
kernel available from http://kernel.ubuntu.com/~kernel-ppa/mainline/?C=N;O=D ?
Please keep in mind the following:
1) The one to test is at
Yes, after removing the nvidia proprietary driver and replacing it with
nouveau I can still reproduce the issue.
** Changed in: xorg-server (Ubuntu)
Status: Incomplete => New
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Bruno Nova, to clarify, if you remove the nvidia proprietary driver, is
this still reproducible?
** Description changed:
I'm on 16.04, using a laptop with Nvidia Optimus (Nvidia driver installed,
Intel card selected).
The problem also occurs in a guest session.
It didn't occur in 14.04.
** Changed in: xorg-server (Ubuntu)
Status: Incomplete => New
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Title:
Sometimes a black rectangle appears briefly under the mouse cursor
Sure Christopher!
A screencast couldn't record the graphical glitches, so I recorded a
video with my phone and attached it to this comment.
In the video I have gnome-terminal open.
At the start, I press and hold the 'A' key on the keyboard and move the
mouse cursor *inside* the terminal window.
Bruno Nova, thank you for reporting this and helping make Ubuntu better.
Would it be possible to obtain a screenshot, video, or screencast of
this issue via https://help.ubuntu.com/community/Screencast ?
** Tags added: latest-bios-1.30
** Tags added: regression-release
** No longer affects:
I now switched to the NVidia card, and I couldn't reproduce the bug.
So this may be specific to Intel.
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Title:
Sometimes a black rectangle
Even more interesting...
I'm developing a small game in SDL.
It runs in a window, hides the cursor, and in every frame moves the cursor to
the center of the window.
But if I move the mouse fast enough for the cursor to exit the window, it is
shown for a split second and, more importantly, that
Interesting...
This issue doesn't happen if I configure the Unity plugin in CompizConfig both
these options in the "General" tab to some other key other than Alt:
show_menu_bar, show_hud.
So, is this something related to the menu bar and the HUD?
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Another place where I've seen this occur is in Gedit, when moving text
using Alt+Arrow keys while the mouse cursor is over the window.
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https://bugs.launchpad.net/bugs/1585329
Title:
This may be an issue specific to Unity, not Compiz.
I tried reproducing the bug (using Gnome Terminal) in Gnome Session
Flashback, both with Compiz and Metacity, and I couldn't reproduce it.
** Also affects: unity (Ubuntu)
Importance: Undecided
Status: New
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