alnikiforov created this revision.
alnikiforov added reviewers: apol, davidedmundson.
Herald added a project: Plasma.
Herald added a subscriber: plasma-devel.
alnikiforov requested review of this revision.
REVISION SUMMARY
When DPMS extension isn't available, powerdevil unexpectedly exits due to a
call to unavailable DPMS function and Qt error handling for such errors.
Following is a full log of powerdevil process when DPMS extension isn't
present:
$ /usr/libexec/kf5/org_kde_powerdevil
QDBusArgument: read from a write-only object
QDBusArgument: read from a write-only object
QDBusArgument: read from a write-only object
powerdevil: No outputs have backlight property
powerdevil: Xrandr not supported, trying ddc, helper
powerdevil: [DDCutilBrightness] 0 display(s) were detected
powerdevil: org.kde5.powerdevil.backlighthelper.brightness failed
powerdevil: DPMS extension not available
The X11 connection broke: Unsupported extension used (code 2)
XIO: fatal IO error 2 (No such file or directory) on X server ":0"
after 408 requests (408 known processed) with 0 events remaining.
This was detected while running KDE in a VM (without x2go). For some reason
'xdpyinfo -queryExtensions' didn't report DPMS extension being present.
Only change in 'PowerDevilDPMSAction::onProfileUnload' was required to fix
issue for me, but changes in other functions could be needed as well, thus I
implemented it. Two calls to m_helper, 'm_helper->startFade()' and
'm_helper->stopFade()', had corresponding conditions left intact since it looks
like it doesn't call DPMS-related functions.
REPOSITORY
R122 Powerdevil
REVISION DETAIL
https://phabricator.kde.org/D27278
AFFECTED FILES
daemon/actions/dpms/powerdevildpmsaction.cpp
To: alnikiforov, apol, davidedmundson
Cc: plasma-devel, Orage, LeGast00n, The-Feren-OS-Dev, cblack, jraleigh, zachus,
fbampaloukas, GB_2, ragreen, ZrenBot, ngraham, alexeymin, himcesjf, lesliezhai,
ali-mohamed, jensreuterberg, abetts, sebas, apol, ahiemstra, mart
