> On 12 May 2019, at 23:47, Tom Horsley <horsley1953@xxxxxxxxx> wrote: > > I have similar problems with using my LG OLEDB6P 4K TV as a > monitor. The nouveau driver seems to be confused by the > EDID information. Using X it picks some resolution the > monitor can't even display (invalid signal on monitor), > using wayland I thought it worked, but when I examined > the details it picked a strange resolution that the monitor > could display, but wasn't the native 3840x2160. > > When I switched to the nvidia binaries from rpmfusion > it sees 3840x2160 in EDID as the best resolution and > displays it no problem. > > I have this feeling someone has been "improving" the > EDID detection in the open source video drivers. > > https://bugzilla.redhat.com/show_bug.cgi?id=1648608 > > https://bugzilla.redhat.com/show_bug.cgi?id=1575391 > > I think this started back in fedora 28, but I only > recently dug into it in more detail and added info to > that first bugzilla. There are a number of ways that I have seen EDID problems. The most popular issue the monitor's EDID is wrong. I think there are quirks tables in the kernel to fix up the well know issues (but it'd been a long time since I had to know about this stuff for work). It used to be that you would see error reports in dmesg if the I2C bus has problems. You can look at the details with: $ xrandr --verboes | edid-decode The "Detailed timing" are the monitors prefered mode I recall. Barry _______________________________________________ users mailing list -- users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://getfedora.org/code-of-conduct.html List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@xxxxxxxxxxxxxxxxxxxxxxx
