On 2018-04-30 11:34, Gilles Detillieux wrote:
On 2018-04-28 04:47, Trevor Cordes wrote:
As for login screens: mine is rotated 90 degrees because of my preferred physical rotation. :-) If I have to mouse something it sure makes it challenging.
Thanks for sharing. Now if someone gets 2 2k or 4k monitors working on Linux, that's what we need to hear reported next! (And if using DP daisychain...)
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As for the rotated login screen, I did have to figure that out on a different RHEL 7 clone system. (Another lab, that got the video detail they needed by sacrificing time resolution on the X axis to gain voltage resolution on the Y.) The trick is once you have the display configured properly for your login account, you need to copy that to GDM's configuration:
cp /home/<username>/.config/monitors.xml /var/lib/gdm/.config/
On Ubuntu, that directory would be /var/lib/gdm3/.config/ according to what I read online. If you have many login usernames that will use that rotated monitor, you may want to copy monitors.xml to their ~/.config directory too, or they will have to do the monitor configuration themselves when they first login.
I also found a trick to handle rotated screens in GRUB. I haven't tried it myself yet, because it hasn't been a priority for us, but if it matters to you, they cover that here: https://ask.fedoraproject.org/en/question/36631/configure-monitors-for-login...