> On 16/04/2020 11:53, Peter Robinson wrote: > >> I've now tried a clean(er) install on the system, and still have this problem. Essentially, what I did was > >> > >> Download "Fedora Minimal" and write it to the SD card. > >> Boot up the system in text mode > >> dnf groupinstall MATE base-x > >> systemctl set-default graphical-target > >> > >> After this, I have a similar problem. Somehow the colours don't look quite as bad this time, but the resolution is clearly not right. xrandr reports > >> > >> No, wait. The problem is actually intermittent. Sometimes everything works (after a reboot), and I just found that when it does, I have > > We've found the upstream driver, vs the one that is downstream that a > > lot of other distros seem to use is quite finicky with some devices, I > > would try swapping out your HDMI cable, that has fixed detection > > issues for a lot of people. > > I'll try that, but I need to get hold of a new cable first. > > But note: /dev/dri is missing when I experience the problems. Can a poor > connection actually cause that? What power supply are you using? What's it rated at? > - Toralf > > > > > >> $ ls /dev/dri/ > >> by-path card0 renderD128 > >> > >> $ ls /sys/class/drm > >> card0 card0-HDMI-A-1 renderD128 > >> card0-Composite-1 card0-Writeback-1 version > >> > >> In cases where I get the problem, on the other hand, /dev/dri is missing, and /sys/class/drm only contains the version file. > >> > >> - Toralf > >> > >> > >> Screen 0: minimum 1824 x 984, current 1824 x 984, maximum 1824 x 984 > >> default connected 1824x984+0+0 0mm x 0mm > >> 1824x984 77.00 > >> > >> I'd really like to track this down further to a component the may cause the issue (or log that could tell me what's wrong), but quite frankly, I don't know where to start looking. One clue, though, I installed and ran "monitor-edid", and it said: > >> > >> [toralf@lille-hjelper ~]$ sudo monitor-edid > >> [toralf@lille-hjelper ~]$ > >> > >> Yep, that's right. Absolutely nothing. In earlier releases, it has given me actual data for the display. > >> > >> - Toralf > >> > >> > >> On 26/03/2020 19:39, Peter Robinson wrote: > >> > >> I have a Raspberry Pi 3B running Fedora AAarch connected to my TV. > >> > >> After installed the latest version 31 updates, the display went weird on > >> me. Monitor preferences list an "unknown" monitor with resolution > >> 1824x984 and refresh rate 77 Hz, and colours are all wrong. What should > >> be red or orange is blue, blue is red or brown, and I'm not really sure > >> what everything else I see on the screen is supposed to look like, but > >> the greens may be more or less right. > >> > >> Any idea what's going on? > >> > >> No, but then I've not ran F-31 on a RPi for a month or two, I tend to > >> move to dev releases pretty quickly and don't regularly use desktop > >> UXes in testing. > >> > >> First question is what updates were applied, the most likely > >> candidates are kernel and mesa. If you reboot into the previous kernel > >> does it start working again? How long between the updates, was it > >> days/weeks/months since you last updated and rebooted? > >> > >> I'm using the MATE desktop. > >> > >> Custom image? Anything else custom or did you start with > >> minimal/workstation/xfce and cross grade? > >> > >> If I connect my CentOS 7 laptop to the same HDMI port using the same > >> cable, everything seems just fine. > >> > >> Well that's a mostly irrelevant comparison because none of the > >> software is anywhere near Fedora. > >> > >> > >> > >> _______________________________________________ > >> arm mailing list -- arm@xxxxxxxxxxxxxxxxxxxxxxx > >> To unsubscribe send an email to arm-leave@xxxxxxxxxxxxxxxxxxxxxxx > >> Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ > >> List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines > >> List Archives: https://lists.fedoraproject.org/archives/list/arm@xxxxxxxxxxxxxxxxxxxxxxx > > _______________________________________________ arm mailing list -- arm@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to arm-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/arm@xxxxxxxxxxxxxxxxxxxxxxx
