Public bug reported:
dpkg --list | grep linux-image
ii linux-image-4.15.0-36-generic 4.15.0-36.39
amd64 Signed kernel image generic
ii linux-image-4.15.0-38-generic 4.15.0-38.41
amd64 Signed kernel image generic
ii linux-image-generic 4.15.0.38.40
amd64 Generic Linux kernel image
ii linux-image-unsigned-4.14.59-041459-generic 4.14.59-041459.201807280929
amd64 Linux kernel image for version 4.14.59 on 64
bit x86 SMP
Booting from GRUB into 4.14.59 allows my two monitors to run at their native
resolution, 2560x1440. Any newer kernel does not allow my two monitors to run
at their native resolution, only allowing up to 1920x1200.
uname -a
Linux blackbox 4.14.59-041459-generic #201807280929 SMP Sat Jul 28
09:32:10 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
** Affects: linux-meta (Ubuntu)
Importance: Undecided
Status: New
** Attachment added: "xrandr_4.14.59.log"
https://bugs.launchpad.net/bugs/1799613/+attachment/5204715/+files/xrandr_4.14.59.log
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https://bugs.launchpad.net/bugs/1799613
Title:
In kernel 4.14.59, monitor resolution is detected correctly. In
kernels after that, they are not detected correctly.
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