ZBook Studio x360 G5 - No HDMI or USB-C Monitor on Linux After Firmware Upgrade
04-02-202011:43 PM - edited 04-02-202011:45 PM
Product: ZBook Studio x360 G5
Operating System: Linux
Not sure if anyone else has experienced this, but I normally run my laptop in intel mode (I blacklist the nvidia modules) without issue. I've upgraded my firmware, and now there's no output via USB-C or HDMI.
When I connect a USB-C monitor, no signal is detected. In Linux (Arch), dmesg shows a USB root hub is detected, but my external display does not appear in xrandr and the monitor just goes into power saving mode.
If I downgrade firmware to 01.07.00 Rev.A, my external monitor works again via USB-C and HDMI. From what I can tell, the issue first appeared in 01.08.00 Rev.A.
Has anyone experienced similar? Has there been a change in the firmware that would affect how the iGPU maps to the HDMI and USB-C ports? Seems firmware bugginess (which Windows developers work around, particularly ACPI) seems to cause a lot of grief with other OSes..
Running Arch with 5.5.13 kernel, Xorg without configuration (hasn't been needed until now), nvidia kernel modules blacklisted, i915 kernel module is loaded..