| Summary: | External screen (with laptop in clamshell mode) does not wake up | ||
|---|---|---|---|
| Product: | [Plasma] kwin | Reporter: | james.a.hulme <james.a.hulme> |
| Component: | wayland-generic | Assignee: | KWin default assignee <kwin-bugs-null> |
| Status: | RESOLVED WORKSFORME | ||
| Severity: | normal | CC: | nate, pg_forums, theluga |
| Priority: | NOR | Keywords: | multiscreen |
| Version First Reported In: | 6.4.1 | ||
| Target Milestone: | --- | ||
| Platform: | Arch Linux | ||
| OS: | Linux | ||
| Latest Commit: | Version Fixed/Implemented In: | ||
| Sentry Crash Report: | |||
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Description
james.a.hulme@gmail.com
2025-07-14 16:55:43 UTC
Further observation: Fault manifests when external HDMI display has been switched off for a while. Actual duration is unclear. I have the same problem. I posted more info about it on the Forum from Arch Linux, as well what I already tried and some ideas: https://bbs.archlinux.org/viewtopic.php?pid=2268957 What is happening here: 1. The Laptop Awakes. 2. kwin (?) sends some handshake to HDMI (monitor in stand-by). 3. The monitor starts turning on. 4. HDMI handshake request times out from KWIN. 5. The monitor is ON but it has no signal. 6. Monitor turns off again. 7. Placeholder screen has blocked input access. (Need to open lid, press enter, close lid) 8. HDMI monitor is ON again and everything is good until the next suspend state. How it could be mitigated: 1. Increase the time-out to X seconds and try to reach the same monitor again or try to connect multiple times for X seconds. 2. Allow receiving input (keyboard, mouse) inside the placeholder screen itself. (If I could press enter, the monitor would wake up (like opening the lid) Some logs from the forum post: ``` Oct 22 14:34:35 theluga plasmashell[1178]: requesting unexisting screen available rect -1 Oct 22 14:34:35 theluga plasmashell[1178]: requesting unexisting screen available rect -1 Oct 22 14:34:35 theluga plasmashell[1178]: There are no outputs - creating placeholder screen Oct 22 14:34:35 theluga kscreenlocker_greet[2644]: There are no outputs - creating placeholder screen Oct 22 14:34:35 theluga org_kde_powerdevil[1200]: There are no outputs - creating placeholder screen Oct 22 14:34:35 theluga kwin_wayland[1013]: Could not find a matching X RandR CRTC/output to set as primary for KWin::DrmOutput(0x648acddd91c0, name="HDMI-A-1", geometry=QRect(0,0 1920x108> Oct 22 14:34:35 theluga kwin_wayland[1013]: Could not find a matching X RandR CRTC/output to set as primary for KWin::DrmOutput(0x648acddd91c0, name="HDMI-A-1", geometry=QRect(0,0 1920x108> Oct 22 14:34:35 theluga yakuake[1368]: There are no outputs - creating placeholder screen Oct 22 14:34:35 theluga xdg-desktop-portal-kde[1408]: There are no outputs - creating placeholder screen Oct 22 14:34:35 theluga ksecretd[1415]: There are no outputs - creating placeholder screen Oct 22 14:34:35 theluga kdeconnectd[1361]: There are no outputs - creating placeholder screen Oct 22 14:34:35 theluga kactivitymanagerd[1194]: There are no outputs - creating placeholder screen Oct 22 14:34:35 theluga polkit-kde-authentication-agent-1[1199]: There are no outputs - creating placeholder screen Oct 22 14:34:35 theluga kwin_wayland[1013]: Could not find a matching X RandR CRTC/output to set as primary for KWin::DrmOutput(0x648acddd91c0, name="HDMI-A-1", geometry=QRect(0,0 1920x108> ``` My problem was solved with the update of plasma-destop to 6.5.0-1. Great news! How about you, James? (In reply to Nate Graham from comment #4) > Great news! How about you, James? I'm running the upgrade today; will update y'all tomorrow. My "overnight" test passed. Things are much improved. I'll keep an eye on things over the next few days. BTW. Upgraded system info is: Operating System: EndeavourOS Kernel Version: 6.12.53-1-lts (64-bit) KDE Plasma Version: 6.5.0 KDE Frameworks Version: 6.19.0 Qt Version: 6.10.0 Graphics Platform: Wayland I've been running daily for a few days now. Problem has not been seen again. Looks good. 🐛🧹 ⚠️ This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information, then set the bug status to REPORTED. If there is no change for at least 30 days, it will be automatically closed as RESOLVED WORKSFORME. For more information about our bug triaging procedures, please read https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging. Thank you for helping us make KDE software even better for everyone! |