Hi All I have a strange behaviour since upgrading from F24 to F25 a few days ago: the mini display port on my laptop doesn't connect me anymore to the external second screen, a TV monitor. This connection worked like a charm on F24. And the mini display port cable is OK: I can see pre-login messages on the connected TV monitor while booting the system.
If you're interested in the machine where this happens, software etc: here's a message to the xorg list from me, a few weeks ago, on how adding a second display to a computer with F24 worked very well: https://lists.x.org/archives/xorg/2017-May/058744.html The reason for this message today is only what you see in the subject line: I simply want to rule out bugs that have nothing to do with the OS itself, or software - like drivers, xorg packages etc. I know that during such upgrade processes firmware is getting updated, but so far I thought this was a change to a runnning OS, and not one with persistent changes to hardware. Details: xrandr detects the mini display port, and the connection to the monitor, but the monitor stays black in 99% of cases. xrandr output: DisplayPort-1-0 connected (normal left inverted right x axis y axis) 1360x768 60.02 + Please note the missing asterisk the last lines behind "1360x768 60.02" that normally seems to indicate an established connection to some external display. journalctl often says: /usr/libexec/gdm-x-session[4386]: (WW) RADEON(G0): drmWaitVBlank failed for PRIME update: Invalid argument Funny thing is: I have similar problems on a second OS (Debian 9) on the same computer, on a separate disk - not necessarily with the same error messages, but with similar results. Except that Debian even does not detect the mini display port connection, contrary to Fedora 25. When I saw that hours ago it made me wonder whether this is really just a result of wrong settings, software/OS bugs, and not the result of some new firmware installed to some hardware device. If I can rule out this mentioned firmware issue I might try upgrade to F26 and see if it helps. Thanks a lot for your time Wolfgang _______________________________________________ users mailing list -- users@lists.fedoraproject.org To unsubscribe send an email to users-le...@lists.fedoraproject.org
