I’m not sure if this happened after an update or a just a reboot, but my external Dell monitor connected via HDMI is just showing a blank black screen (no cursor or anything). The monitor is getting a signal, and is recognized. I tried a different HDMI cable, without luck. Funny thing is, that the monitor is working if I boot via the LiveCD and use the same display settings as my installation. I even tried copying my .config/monitors.xml from the LiveCD.
Any ideas on how to find the root cause? I really don’t want to go through a re-install.
Here’s some system details:
uname -r 5.10.7-200.fc33.x86_64 lshw -C display *-display description: VGA compatible controller product: UHD Graphics vendor: Intel Corporation physical id: 2 bus info: pci@0000:00:02.0 version: 02 width: 64 bits clock: 33MHz capabilities: pciexpress msi pm vga_controller bus_master cap_list rom configuration: driver=i915 latency=0 resources: irq:141 memory:eb000000-ebffffff memory:60000000-6fffffff ioport:3000(size=64) memory:c0000-dffff 00:02.0 VGA compatible controller: Intel Corporation UHD Graphics (rev 02) (prog-if 00 [VGA controller]) DeviceName: Onboard - Video Subsystem: Dell Device 09be Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+ Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0, Cache Line Size: 64 bytes Interrupt: pin A routed to IRQ 141 Region 0: Memory at eb000000 (64-bit, non-prefetchable) [size=16M] Region 2: Memory at 60000000 (64-bit, prefetchable) [size=256M] Region 4: I/O ports at 3000 [size=64] Expansion ROM at 000c0000 [virtual] [disabled] [size=128K] Capabilities: <access denied> Kernel driver in use: i915 Kernel modules: i915