https://bugs.kde.org/show_bug.cgi?id=468744
Bug ID: 468744
Summary: Monitor show "No signal" in SDDM and KDE
Classification: I don't know
Product: kde
Version: unspecified
Platform: Fedora RPMs
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: unassigned-b...@kde.org
Reporter: zlobniyshu...@gmail.com
Target Milestone: ---
Description of problem:
I have system with two monitors:
Main monitor - AOC275QXL (HDMI 2560x1440 FreeSync)
Auxiliary monitor - Nec2090 (DVI-D 1600x1200)
Video HD4550 (HDMI+DVI-D)
Just before start SDDM my AOC275QXL show "No signal".
How reproducible:
always
Steps to Reproduce:
1. Power on system - picture on both monitors
2. Select fedora in grub - picture on both monitors
3. View boot logs (rhgb disabled) - picture on both monitors
4. Start SDDM - picture only on auxiliary monitor
Actual results:
"No signal" on main monitor after SDDM start. In KDE for X11 and Wayland modes
main monitor show "No signal".
Expected results:
Both monitors can show picture in SDDM & KDE
Additional info:
In "KDE monitor settings" I can see both monitors. I can change resolution for
main monitor, turn on/off "Main monitor switch", enable/disable monitor - no
visual changes on main monitor (still "No signal").
Start system only on main monitor got same effect - "No signal" after SDDM
start
This configuration normally worked before on F37. During F38 install (from
scratch) installer worked on main monitor without problems.
With x11 enabled in SDDM I have both monitors working.
Than, if I load KDE in x11 mode, both monitors working too!
But if I load KDE in wayland mode, my main monitor show "No signal".
Re-enter in KDE after that in x11 mode did not help. Only system reboot enable
main monitor again.
Initial bug report was in https://bugzilla.redhat.com/show_bug.cgi?id=2187036
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