Created attachment 1671372 [details]
kernel logs from a boot where the HDMI cable was connected
1. Please describe the problem: When connecting a 4k monitor to my Fedora machine (Intel UHD graphics 620) over HDMI, the maximum available resolution is 1920x1080. Running MS Windows on the same machine, the monitor can be set to 4k resolution. According to dmesg, i915 seems to load fine.
When connecting the HDMI cable, though, the following message appears:
[drm:intel_enable_ddi [i915]] *ERROR* [CONNECTOR:102:HDMI-A-1] Failed to configure sink scrambling/TMDS bit clock ratio
2. What is the Version-Release number of the kernel: 5.5.9-200
3. Did it work previously in Fedora?: No.
4. Can you reproduce this issue? If so, please provide the steps to reproduce
the issue below: Yes, the problem occurs every time a 4k monitor is connected to the machine over HDMI.
5. Does this problem occur with the latest Rawhide kernel? To install the
Rawhide kernel, run ``sudo dnf install fedora-repos-rawhide`` followed by
``sudo dnf update --enablerepo=rawhide kernel``: t.b.d.
6. Are you running any modules that not shipped with directly Fedora's kernel?: No.
7. Please attach the kernel logs. You can get the complete kernel log
for a boot with ``journalctl --no-hostname -k > dmesg.txt``. If the
issue occurred on a previous boot, use the journalctl ``-b`` flag. Done.
This message is a reminder that Fedora 31 is nearing its end of life.
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