Control panel is gone after monitor suspend etc. (please read "steps to reproduce" below). (This is a dualhead configuration). Happens in about 80 % of all times. Bug / issue exists since i've been using kde5 (for about 4 month now?). This _is_ really starting to annoy me. Distro: Archlinux Kernel: latest stable / 4.3 / 4.2.x / etc. Software: latest KDE / latest mesa / latest xf86-ati-video _Pleeease_ ask any questions, i'll try to help out with any infos i can give. Reproducible: Always Steps to Reproduce: 1. Startup kde5 2. switch off monitors or wait until monitors are suspended 3. switch on monitors Actual Results: -> control panel is gone(!). Additionally (sometimes) all konsole sessions are "gone" (well, the processes still exist, but there's no konsole session anymore on the desktop). This sucks hard and means data loss when you've been working via ssh on some server etc. -> Dirty hack to at least get the control panel back: [alt]+[f2]: run "killall -2 plasmashell; plasmashell" Expected Results: Everything (Control panel + konsole sessions) is still there after powering monitors back on again. [lspci output] [boris64@boris64 ~]$ lspci 00:00.0 Host bridge: Intel Corporation 4th Gen Core Processor DRAM Controller (rev 06) 00:01.0 PCI bridge: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor PCI Express x16 Controller (rev 06) 00:14.0 USB controller: Intel Corporation 9 Series Chipset Family USB xHCI Controller 00:16.0 Communication controller: Intel Corporation 9 Series Chipset Family ME Interface #1 00:19.0 Ethernet controller: Intel Corporation Ethernet Connection (2) I218-V 00:1a.0 USB controller: Intel Corporation 9 Series Chipset Family USB EHCI Controller #2 00:1c.0 PCI bridge: Intel Corporation 9 Series Chipset Family PCI Express Root Port 1 (rev d0) 00:1c.3 PCI bridge: Intel Corporation 82801 PCI Bridge (rev d0) 00:1c.4 PCI bridge: Intel Corporation 9 Series Chipset Family PCI Express Root Port 5 (rev d0) 00:1d.0 USB controller: Intel Corporation 9 Series Chipset Family USB EHCI Controller #1 00:1f.0 ISA bridge: Intel Corporation 9 Series Chipset Family Z97 LPC Controller 00:1f.2 RAID bus controller: Intel Corporation SATA Controller [RAID mode] 00:1f.3 SMBus: Intel Corporation 9 Series Chipset Family SMBus Controller 01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Tahiti XT [Radeon HD 7970/8970 OEM / R9 280X] 01:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Tahiti XT HDMI Audio [Radeon HD 7970 Series] 03:00.0 PCI bridge: ASMedia Technology Inc. ASM1083/1085 PCIe to PCI Bridge (rev 04) 04:01.0 Multimedia controller: Twinhan Technology Co. Ltd Mantis DTV PCI Bridge Controller [Ver 1.0] (rev 01) 05:00.0 Audio device: Creative Labs EMU20k2 [X-Fi Titanium Series] (rev 04) [/lspci output] [xrandr output] [boris64@boris64 ~]$ xrandr Screen 0: minimum 320 x 200, current 3840 x 1080, maximum 16384 x 16384 HDMI-0 connected primary 2560x1080+0+0 (normal left inverted right x axis y axis) 677mm x 290mm 2560x1080 60.00*+ 1920x1080 60.00 50.00 59.94 30.00 29.97 1920x1080i 60.00 50.00 59.94 1680x1050 59.88 1600x900 60.00 1280x1024 75.02 60.02 1152x864 75.00 1280x720 60.00 50.00 59.94 1024x768 75.08 60.00 800x600 75.00 60.32 720x576 50.00 720x480 60.00 59.94 640x480 75.00 60.00 59.94 720x400 70.08 DisplayPort-0 disconnected (normal left inverted right x axis y axis) DVI-0 disconnected (normal left inverted right x axis y axis) DVI-1 connected 1280x1024+2560+0 (normal left inverted right x axis y axis) 376mm x 301mm 1280x1024 60.02 + 75.02* 1280x960 60.00 1152x864 75.00 1024x768 75.08 70.07 60.00 832x624 74.55 800x600 72.19 75.00 60.32 56.25 640x480 75.00 72.81 66.67 60.00 720x400 70.08 [/xrandr output]
First question, what is a "control panel" ?
Hm, looks like it's called only "panel" in english. (A simple panel which can be added to the desktop)
Ok, i made a short video (~50MB) with my smartphone. -> http://boris64.net/files/videos/kde_bugreport_panel_gone.mp4 (please excuse my poor english and poor video quality) Maybe this clears things up a bit.
I'm having this problem on kubuntu 16.04 as well. My monitor is a 4k monitor which acts like two virtual screens. Since I can't extend the one panel across both screens, I have two panels at the bottom, one for each screen. On suspend/resume, the panel on the second virtual screen *always* disappears. The same happens on switching to a new session and then back again. The killall and restart plasmashell workaround makes the second panel reappear - however the panel often overlaps the first panel on the first screen and I have to drag it across to the second screen.
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 set the bug status 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!
(In reply to Andrew Crouthamel from comment #5) > 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 ... Well, the needed info has been provided 3.5 years ago, so: lol. (Looks like i didn't know i was able to change the status. Stupid me. Also looks like nobody cared because the status _did not_ change...) Whatever, i can't reproduce the bug on my machine anymore. It must have been fixed somehow by some update _years_ ago.