You are right, but I am using this strange resolution with a good
reason. If I am using 1920x1080 I am suffered from a even bigger bug -
after resume (which often happens with laptops) the screen flickers like
hell.
See here:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1872760
Playing
True but on the other hand this (Ubuntu 20.04) are LTS distros. This
will affect poeple at least for more than 3 years. But I understand, the
new stuff (Wayland) is more of interest for dev than fixing the old one.
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which
You nailed it: intel hardware (this is what I refered), but modeset
driver. Topic is clearer now - thanks. Age of bug is rather old, not a
good sign imho.
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apport information
** Attachment added: "Xrandr.txt"
https://bugs.launchpad.net/bugs/110/+attachment/5396185/+files/Xrandr.txt
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apport information
** Attachment added: "XorgLogOld.txt"
https://bugs.launchpad.net/bugs/110/+attachment/5396184/+files/XorgLogOld.txt
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apport information
** Attachment added: "xdpyinfo.txt"
https://bugs.launchpad.net/bugs/110/+attachment/5396186/+files/xdpyinfo.txt
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apport information
** Attachment added: "XorgLog.txt"
https://bugs.launchpad.net/bugs/110/+attachment/5396183/+files/XorgLog.txt
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apport information
** Attachment added: "ProcModules.txt"
https://bugs.launchpad.net/bugs/110/+attachment/5396181/+files/ProcModules.txt
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apport information
** Attachment added: "MonitorsUser.xml.txt"
https://bugs.launchpad.net/bugs/110/+attachment/5396176/+files/MonitorsUser.xml.txt
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apport information
** Attachment added: "LightdmDisplayLog.txt"
https://bugs.launchpad.net/bugs/110/+attachment/5396170/+files/LightdmDisplayLog.txt
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apport information
** Attachment added: "Lsusb-t.txt"
https://bugs.launchpad.net/bugs/110/+attachment/5396174/+files/Lsusb-t.txt
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apport information
** Attachment added: "ProcEnviron.txt"
https://bugs.launchpad.net/bugs/110/+attachment/5396179/+files/ProcEnviron.txt
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** Attachment added: "LightdmLog.txt"
https://bugs.launchpad.net/bugs/110/+attachment/5396171/+files/LightdmLog.txt
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apport information
** Attachment added: "ProcInterrupts.txt"
https://bugs.launchpad.net/bugs/110/+attachment/5396180/+files/ProcInterrupts.txt
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** Attachment added: "ProcCpuinfoMinimal.txt"
https://bugs.launchpad.net/bugs/110/+attachment/5396178/+files/ProcCpuinfoMinimal.txt
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** Attachment added: "DpkgLog.txt"
https://bugs.launchpad.net/bugs/110/+attachment/5396169/+files/DpkgLog.txt
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** Attachment added: "UdevDb.txt"
https://bugs.launchpad.net/bugs/110/+attachment/5396182/+files/UdevDb.txt
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apport information
** Tags added: apport-collected focal ubuntu
** Description changed:
Running a Ubuntu 20.04 with its default (kmodesetting ?) driver. Screen
tearing is present and shows artefacts while scrolling in browsers
(firefox and chromium) and videos.
Ubuntu
apport information
** Attachment added: "Lspci.txt"
https://bugs.launchpad.net/bugs/110/+attachment/5396172/+files/Lspci.txt
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apport information
** Attachment added: "Lspci-vt.txt"
https://bugs.launchpad.net/bugs/110/+attachment/5396173/+files/Lspci-vt.txt
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** Attachment added: "ProcCpuinfo.txt"
https://bugs.launchpad.net/bugs/110/+attachment/5396177/+files/ProcCpuinfo.txt
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** Attachment added: "Lsusb-v.txt"
https://bugs.launchpad.net/bugs/110/+attachment/5396175/+files/Lsusb-v.txt
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** Package changed: ubuntu => xorg-server (Ubuntu)
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Title:
Ubuntu 20.04 screen tearing intel graphics
To manage notifications about
This bug disappears if I go back from intel x driver to standard
modesetting driver. I didn't to that intenionally. I haven't been aware
of that, but to get xbacklight working (to change screen brightness) I
activated that. After removing that change in /etc/X11 mpv/celluloid
works without this
What command beside mpv/Celluloid are suffered at your side?
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https://bugs.launchpad.net/bugs/1876219
Title:
iris driver for old cpu
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@akechishiro: Did the above mentioned workaround works for you?
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https://bugs.launchpad.net/bugs/1876219
Title:
iris driver for old cpu
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Public bug reported:
X crashes when opening an eps file in GIMP, reliably around 2 seconds
after GIMP shows the image. Mouse pointer freezing in that time usually.
Ubuntu 20.04, latest updates as of time of writing.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: xserver-xorg-core
For those wo asking where to set
Adding this line to ~/.profile helps for me as workaround.
"export MESA_LOADER_DRIVER_OVERRIDE=i965"
But this is a severe bug and should be fixed. I am curious what change
caused this?
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For me (core m5 6th generation) I noticed that mpv/celluloid is crashing
after an update of ubuntu mate 20.04. Could reproduce by reinstalling
(works) and update (crash). Unfortunatly I don't know what and how to
revert.
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Public bug reported:
I run X Diagnostics to see what information is provided.
Ubuntu is slow on booting up in spite of a Intel Core i7-3770 CPU @ 3.40GHz x 8
and 7,7 GiB memory.
My knowledge of the OS is far too inadequate to understand what all the
information means.
I also have a Canon MP540
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