[Bug 1799613] Re: In kernel 4.14.59, monitor resolution is detected correctly. In kernels after that, they are not detected correctly.

Launchpad has imported 2 comments from the remote bug at
https://bugs.freedesktop.org/show_bug.cgi?id=108554.

If you reply to an imported comment from within Launchpad, your comment
will be sent to the remote bug automatically. Read more about
Launchpad's inter-bugtracker facilities at
https://help.launchpad.net/InterBugTracking.

------------------------------------------------------------------------
On 2018-10-25T15:38:17+00:00 Cristian Aravena Romero wrote:

Hello,

Open bug in launchpad.net
https://bugs.launchpad.net/bugs/1799613

"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."

Best regards,
--
Cristian Aravena Romero (caravena)

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1799613/comments/17

------------------------------------------------------------------------
On 2018-10-25T15:48:31+00:00 Alexdeucher wrote:

Please attach your xorg log and dmesg output. Can you bisect?

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1799613/comments/19


** Changed in: linux
Status: Unknown => Confirmed

** Changed in: linux
Importance: Unknown => Medium

--
You received this bug notification because you are subscribed to linux
in Ubuntu.
Matching subscriptions: Bgg, Bmail, Nb
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.

Status in Linux:
Confirmed
Status in linux package in Ubuntu:
Confirmed

Bug description:
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

To manage notifications about this bug go to:
https://bugs.launchpad.net/linux/+bug/1799613/+subscriptions