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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D278930 --- Comment #2 from Rostislav Krasny <rosti.bsd@gmail.com> --- Hi Marcin and thank you for your quick response. After further investigation it turned out that the problem is not related to the DisplayPort 1.2 mode at all and I was just got confused by circumstance= s. Let me tell all the story again. 1. I installed FreeBSD 14.1-BETA2. 2. I installed LXQT, sddm, Xorg and video drivers. Then I tried to log into= the LXQT session and ran into the blank screen problem for the first time. 3. Without removing LXQT and sddm (but I disabled sddm in the /etc/rc.conf)= I installed XFCE and lightdm. When I tried the XFCE I ran into the blank scre= en problem second time and though this is some global issue. 4. I decided to try something different and installed the latest snapshot of DragonFlyBSD with Xorg and some dm instead of the previously installed Free= BSD. DragonFlyBSD has the blank screen problem as well, even in the dm login pag= e. This was the first time when I opened my internal monitor settings and disa= bled the DisplayPort 1.2 support. This fixed the problem in the DragonFlayBSD an= d I decided to go back to the FreeBSD 14.1-BETA2. That "fix" confused me and th= is is why I thought the problem in FreeBSD is the same. 5. I installed FreeBSD 14.1-BETA2 again. 6. Installed Xorg, video drivers, XFCE and lightdm but not LXQT and video w= orks fine even with DisplayPort 1.2 enabled. Installing LXQT even without sddm brings this problem back. Running "pkg de= lete lxqt && pkg autoremove" fixes it. So this is something in LXQT and it brakes all other installed DEs. I will change the title of this bug report. --=20 You are receiving this mail because: You are the assignee for the bug.=
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