Gregor Wilkommen! (Welcome!)
Plasma 6 Megathread
I'm just now noticing the 'Over Dramatic' tag on this thread 
- Edited
rkill gone? I just tried to kill an unresponsive app (game launcher that I was trying to get to work) and it didn't pop up. Used to be I could just ctrl + alt + esc, cursor would turn into a skull and crossbones and I could just click to kill the offending program. To be fair I don't know if it went away in the upgrade, or at some point prior.
Are there any good replacements?
Update It was called xkill. It had gotten removed at some point and not reinstalled. Perhaps from the 6 upgrade? Like ksysguard? Anyway I have it working now.
Some additional problems since Plasma 6:
- I have to do plasmashell --replace everytime my external monitor goes to sleep
- I have the same problem like @rincor with some applications, they are visible in the front, but when I click on it or type in something the window behind it is actually receiving the commands. Don't know exactly how to trigger it, but I guess it's only in the Wayland session
4 days later
In the latest update, now my 3440x1440 monitor refresh rate of 100hz only shows 60 hz or 50 hz. I could be wrong, about the 100 hz, but is there any place for me to check what refresh rates are available for a monitor?
Bhibb "latest update" as in you were running plasma 5 before, or the most recent sync? You could query the edid of the monitor to see what it supports, we don't have any in-repo tools for this (though I should probably add one) but there are a number of projects out there that you can build that would do it.
Also, Wayland or X11? They both do output handling very differently.
ReillyBrogan Latest update meaning our latest sync, and I'm working under Wayland for now. Once I'm done for the day I'll close out my work and switch to X11 to see if the monitor reports a different refresh rate/what the xrandr settings report, etc. and report back.
Bhibb I was wrong, we actually do have a tool to parse the monitor EDID and it should already be installed since you're on Plasma. You can run the following to see the exact resolutions and frame rates that your monitor supports:
ls /sys/class/drm
# This will show you the GPUs detected and the ports they have. The following command will depend on which GPU you're checking and which port
cat /sys/class/drm/card0-DP-1 | di-edid-decodeReillyBrogan Looks like 60 is all I've got, so I must have mis-remembered!
cat /sys/class/drm/card0-DP-1/edid | di-edid-decode
Block 0, Base EDID:
EDID Structure Version & Revision: 1.4
Vendor & Product Identification:
Manufacturer: SAM
Model: 3524
Serial Number: 810572110
Made in: week 36 of 2017
Basic Display Parameters & Features:
Digital display
Bits per primary color channel: 8
DisplayPort interface
Maximum image size: 80 cm x 33 cm
Gamma: 2.20
DPMS levels: Off
Supported color formats: RGB 4:4:4, YCrCb 4:4:4, YCrCb 4:2:2
First detailed timing includes the native pixel format and preferred refresh rate
Color Characteristics:
Red : 0.6621, 0.3281
Green: 0.2763, 0.5908
Blue : 0.1337, 0.1328
White: 0.3076, 0.3710
Established Timings I & II:
IBM : 720x400 70.081663 Hz 9:5 31.467 kHz 28.320000 MHz
DMT 0x04: 640x480 59.940476 Hz 4:3 31.469 kHz 25.175000 MHz
Apple : 640x480 66.666667 Hz 4:3 35.000 kHz 30.240000 MHz
DMT 0x05: 640x480 72.808802 Hz 4:3 37.861 kHz 31.500000 MHz
DMT 0x06: 640x480 75.000000 Hz 4:3 37.500 kHz 31.500000 MHz
DMT 0x08: 800x600 56.250000 Hz 4:3 35.156 kHz 36.000000 MHz
DMT 0x09: 800x600 60.316541 Hz 4:3 37.879 kHz 40.000000 MHz
DMT 0x0a: 800x600 72.187572 Hz 4:3 48.077 kHz 50.000000 MHz
DMT 0x0b: 800x600 75.000000 Hz 4:3 46.875 kHz 49.500000 MHz
Apple : 832x624 74.551266 Hz 4:3 49.726 kHz 57.284000 MHz
DMT 0x10: 1024x768 60.003840 Hz 4:3 48.363 kHz 65.000000 MHz
DMT 0x11: 1024x768 70.069359 Hz 4:3 56.476 kHz 75.000000 MHz
DMT 0x12: 1024x768 75.028582 Hz 4:3 60.023 kHz 78.750000 MHz
DMT 0x24: 1280x1024 75.024675 Hz 5:4 79.976 kHz 135.000000 MHz
Apple : 1152x870 75.061550 Hz 192:145 68.681 kHz 100.000000 MHz
Standard Timings:
DMT 0x15: 1152x864 75.000000 Hz 4:3 67.500 kHz 108.000000 MHz
DMT 0x1c: 1280x800 59.810326 Hz 16:10 49.702 kHz 83.500000 MHz
DMT 0x55: 1280x720 60.000000 Hz 16:9 45.000 kHz 74.250000 MHz
DMT 0x23: 1280x1024 60.019740 Hz 5:4 63.981 kHz 108.000000 MHz
DMT 0x2f: 1440x900 59.887445 Hz 16:10 55.935 kHz 106.500000 MHz
DMT 0x53: 1600x900 60.000000 Hz 16:9 60.000 kHz 108.000000 MHz (RB)
DMT 0x3a: 1680x1050 59.954250 Hz 16:10 65.290 kHz 146.250000 MHz
Detailed Timing Descriptors:
DTD 1: 3440x1440 59.972616 Hz 43:18 88.819 kHz 319.750000 MHz (797 mm x 333 mm)
Hfront 48 Hsync 32 Hback 80 Hpol P
Vfront 3 Vsync 10 Vback 28 Vpol N
Display Product Name: 'CF791'
Display Product Serial Number: 'HTRJ900259'
Extension blocks: 1
Checksum: 0xd1
----------------
Block 1, CTA-861 Extension Block:
Revision: 3
Underscans IT Video Formats by default
Basic audio support
Supports YCbCr 4:4:4
Supports YCbCr 4:2:2
Native detailed modes: 1
Video Data Block:
VIC 16: 1920x1080 60.000000 Hz 16:9 67.500 kHz 148.500000 MHz (native)
VIC 31: 1920x1080 50.000000 Hz 16:9 56.250 kHz 148.500000 MHz
VIC 4: 1280x720 60.000000 Hz 16:9 45.000 kHz 74.250000 MHz
VIC 19: 1280x720 50.000000 Hz 16:9 37.500 kHz 74.250000 MHz
VIC 3: 720x480 59.940060 Hz 16:9 31.469 kHz 27.000000 MHz
VIC 18: 720x576 50.000000 Hz 16:9 31.250 kHz 27.000000 MHz
VIC 90: 2560x1080 60.000000 Hz 64:27 66.000 kHz 198.000000 MHz
Audio Data Block:
Linear PCM:
Max channels: 2
Supported sample rates (kHz): 48 44.1 32
Supported sample sizes (bits): 24 20 16
Speaker Allocation Data Block:
FL/FR - Front Left/Right
Detailed Timing Descriptors:
DTD 2: 3440x1440 99.981604 Hz 43:18 150.972 kHz 543.500000 MHz (797 mm x 333 mm)
Hfront 48 Hsync 32 Hback 80 Hpol P
Vfront 3 Vsync 10 Vback 57 Vpol N
DTD 3: 3440x1440 49.988693 Hz 43:18 73.683 kHz 265.260000 MHz (797 mm x 333 mm)
Hfront 48 Hsync 32 Hback 80 Hpol P
Vfront 3 Vsync 10 Vback 21 Vpol N
DTD 4: 2560x1440 59.950550 Hz 16:9 88.787 kHz 241.500000 MHz (797 mm x 333 mm)
Hfront 48 Hsync 32 Hback 80 Hpol P
Vfront 3 Vsync 5 Vback 33 Vpol N
DTD 5: 1920x1080 60.000000 Hz 16:9 67.500 kHz 148.500000 MHz
Hfront 88 Hsync 44 Hback 148 Hpol P
Vfront 4 Vsync 5 Vback 36 Vpol P
DTD 6: 2560x1080 60.000000 Hz 64:27 66.000 kHz 198.000000 MHz (797 mm x 333 mm)
Hfront 248 Hsync 44 Hback 148 Hpol P
Vfront 4 Vsync 5 Vback 11 Vpol P
Checksum: 0x4b
----------------
Failures:
Block 0, Base EDID:
Display Range Limits: GTF can't be combined with non-continuous frequencies.
EDID conformity: FAILAll good over here. Apologies for crying wolf.
[deleted] I can't reproduce that, is it still an issue?
- Edited
Bhibb I owned this monitor and I'm sure it had 100 Hz. When I google for it the specs also say 100 Hz. If you look at Detailed Timing Descriptors. DTD 2: Has 99.98 Hz.
kaktuspalme Sebastian Thank you both for jogging my memory and for the link to rollback.
I've tried to rollback to 3/30/2024's update, but even after a reboot my external monitor still shows 60 hz in Wayland and X11. The monitor is working at 60hz and 50hz, but it won't show me 100hz (or 99.98hz). I tried rolling back to other upgrades, and with reboots the refresh rate was still the same.
I've noticed a new issue where I cannot "logout" of my Plasma 6 session (X11 or Wayland) and if I want to switch between them I need to "Switch Users." When I click the logout button it kills my apps, but does not actually logout.
My system is working, but these two issues are the major ones now:
- USB C to Display Port monitor used to show 99.98hz, now shows only 50 and 60hz.
- I cannot log out of a Plasma 6 session (X11 or Wayland).
Might be a kernel bug. You should try booting into the previous kernel
ReillyBrogan Thanks for suggesting this. I just rebooted into the previous kernel on my machine but the same issues persist: I cannot select 100hz on my monitor and I cannot logout of my session.
ReillyBrogan So I realized that while I was gone on a trip for a week, that I had let someone else use my desk and monitor. Somehow they had set my Display port to 1.1 instead of 1.2, and once I set this back to 1.2 it miraculously solved both my issues of the missing 100hz (pretty obvious) and I know have the ability to logout as expected (not sure why the monitor would have anything to do with this).
Somehow it's all working now. Thanks for troubleshooting with me.
[deleted]
ReillyBrogan The issue is still present. I have done a bit more reading and it seems that it is connected to the presence of the tray icon. When the icon is disabled and I change download preferences then qBittorrent crashes, if I enable it then I can change download preferences and it won't crash. GitHub qBittorrent Issue #20604 (Closed), GitHub qBittorrent Issue #20627 (Open).
kaktuspalme
No, it's also present on X11 (I'm on X11).
I reported it on bugs.kde, there's a whole thread on this issue.