Comment 41 for bug 1859071
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| Daniel van Vugt (vanvugt) wrote Re: Modesetting randomly fails to offer all modes available in the EDID | #41 |
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35a32c5
(Get the code!)
Thanks!
The login screen uses Wayland so that's also a good test in itself. If the issue affects the Wayland backend then it sounds like this is a kernel or hardware problem. To check that, next time the issue happens, please run:
grep . /sys/class/
and then attach the file 'modes.txt' here.
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Just a guess: The problem might be timeouts on the i2c bus waiting for the monitor to return its EDID. So that could happen randomly. In that case, maybe try a different DisplayPort cable if you can.