SUMMARY When waking from sleep external monitor is not recognized. Using thunderbolt to display port connector. Must reboot machine for monitor to become available. External display is not recognized at any time if not plugged in before boot. STEPS TO REPRODUCE 1. Let computer go to sleep. 2. 3. OBSERVED RESULT Computer wakes only laptop screen. External monitor is not recognized until reboot. EXPECTED RESULT Wake computer and all screens become available. SOFTWARE VERSIONS (available in About System) KDE Plasma Version: 5.14 KDE Frameworks Version: 5.51.0 Qt Version: 5.11.2 ADDITIONAL INFORMATION Laptop: MacBook Pro 11,5 (Mid 2015) Monitor make and model: HP 27" Z27X Connection: Thunderbolt to Display Port (Laptop <-> Monitor)
Hey there James, try running "dmesg -w" and watching the output when trying to plug in the monitor after sleep. Does anything come up? This will at least let us know if the system even sees that you have plugged something in.
I've a similar problem: 2x monitor connected using DVI (never ran into problems), now I've added a new monitor using Display Port and I'm having some problems: the monitor take some seconds to power up, until then the plasma desktop are messed up: the panels, widget and background are in the wrong place (and wrongly rotated...). When the Display Port monitor is started the situation is a bit better but anyway the screens are mixed. Is this report similar to https://bugs.kde.org/show_bug.cgi?id=399590 and https://bugs.kde.org/show_bug.cgi?id=398816 ? Maybe it is related even to https://bugs.launchpad.net/ubuntu/+source/kscreen/+bug/1573345
Is this still happening in Plasma 5.22, by any chance?
Dear Bug Submitter, This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information as soon as possible and set the bug status as REPORTED. Due to regular bug tracker maintenance, if the bug is still in NEEDSINFO status with no change in 30 days the bug will be closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging If you have already provided the requested information, please mark the bug as REPORTED so that the KDE team knows that the bug is ready to be confirmed. Thank you for helping us make KDE software even better for everyone!
This bug has been in NEEDSINFO status with no change for at least 30 days. The bug is now closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging Thank you for helping us make KDE software even better for everyone!