On 16.01.25 12:15, Raúl HERMOSO SÁNCHEZ wrote: Hi,
I am writing to query about a problem I have encountered with XServer. It freezes when opening any window after "many" others are already opened.
How many windows ? On which HW configuration ? Sometimes, proprietary drivers can do really ugly things. (for professional use, I'd highly recommend only using FOSS drivers *1) Can you script up a test case ? Have you tried debugging the Xserver ? (attach via gdb and look whats going on there) ?
We believe it is the XServer freezing as any command- line tool that uses X that we try to execute (xwininfo, xdotool, xls_client...) never paints or returns.
Do other (earlier connected) clients still work ? Does console switching still work ?
To be more precise, the server freezes when we try to open 40+ "client" windows (which means probably around three more actual Window created: toolbars, borders, auxiliary windows for clipboard....).
Note that widget toolkits often create sub-windows, so you might have a lot more windows than clients.
It may be of interest for this issue to know that we are using an in-house Window Manager developed by ourselves).
Maybe that's the cause ? Can you share the code ? Btw, mind telling us what's the underlying reason for writing your own custom WM ? Let me guess: special control center requirements ? Not long ago, I've patched up xfwm4 for railways control centers (eg. prevent overlapping, customizable regions where windows can dock and maxmimize into, automatically move specific windows to certain regions, ...) ... unfortunately upstream didnt want my patches. --mtx *1) eg. one of my clients using Nvidia cards for their control center stations. Unsurprisingly this caused a lot trouble from kernel level on. Their only reason was the need of many ports (and they didn't even need HW-GL). Never found out why they didn't just put in more, cheap cards or possibly use USB dongles. Probably a political problem. -- --- Hinweis: unverschlüsselte E-Mails können leicht abgehört und manipuliert werden ! Für eine vertrauliche Kommunikation senden Sie bitte ihren GPG/PGP-Schlüssel zu. --- Enrico Weigelt, metux IT consult Free software and Linux embedded engineering i...@metux.net -- +49-151-27565287
