On Wed, 12 Jul 2017 19:58:21 +0200 Wolfgang Pfeiffer <roto(a)gmx.net> wrote:
On Tue, 2017-07-11 at 19:39 -0500, Ranjan Maitra wrote:
> Hello,
>
> My second monitor has stopped working after an upgrade to Fedora 26
> using dnf system-upgrade.
>
> Also, arandr is busted: here is what I get.
>
> $ arandr
> Traceback (most recent call last):
> File "/bin/arandr", line 42, in <module>
> main()
> File "/usr/lib/python2.7/site-packages/screenlayout/gui.py", line
> 318, in main
> force_version=options.force_version
> File "/usr/lib/python2.7/site-packages/screenlayout/gui.py", line
> 157, in __init__
> self.widget = widget.ARandRWidget(display=randr_display,
> force_version=force_version)
> File "/usr/lib/python2.7/site-packages/screenlayout/widget.py", line
> 48, in __init__
> self._xrandr = XRandR(display=display,
> force_version=force_version)
> File "/usr/lib/python2.7/site-packages/screenlayout/xrandr.py", line
> 42, in __init__
> raise Exception("XRandR 1.2/1.3 required.")
> Exception: XRandR 1.2/1.3 required.
>
> And here is the output from xrandr:
Does the external monitor switch work on your computer? Here it is the
<Meta/Windows> - <p>
keyboard shortcut
Careful: this switch can drive my CPU up to 100% load - I recommend
being logged in as root on a tty to be able kill the offending process
via htop or someth like that. Here the offender seems to be, IIRC
gnome-settings-daemon
I recommend a
tail -f /path/to/your/active/Xorg*log
and then see what happens there if you plug in the second monitor.
Watching journalctl (journalctl -f, IIRC) might help too ...
What GPU? To identify it:
lspci -nnk |grep -A 5 -i vga
Also: firmware for your GPU loaded? Someth. like:
dmesg | grep -E 'drm|amd' | grep -iE 'firmware|microcode'
(from
https://wiki.debian.org/AtiHowTo#Firmware )
I had my external monitor settings more or less broken/reduced in
functionality a few days ago after an upgrade from F24 > F25 ... still
hoping, in spite of your mail, that an upgrade to F26 fixes my problems.
I don't want to go back to F24 where a connect to an external TV monitor
worked very well with an AMD GPU.
HTH
Wolfgang
Thanks very much to you, and to everybody else who has responded. This morning, perhaps
after an update (I have these set up to be cron'ed in the wee hours), my second
monitor is back so I can not reproduce my own report. Or, perhaps a mouse went by and
gnawed the wires into tip-top connection:-)
In any case, I have to agree that F25->F26 is another flawless upgrade in the long
series of upgrades. I have had very few mess-ups happen in general, and I have been using
Fedora from Fedora Core 1. (Which makes me wonder why we even need to do an upgrade
anymore. From what I gather, there may be an option in future Fedoras, if some proposals
get accepted, which may make upgrades obsolete.)
But in any case, thanks again for the F team for a job well done!
Best wishes,
Ranjan