I-Firefox Isithangami Sokwesekwa

Hi Folk,

Firefox runs perfectly smooth in 3840x2160, so this is not a perf issue. However when switching from onboard laptop screen (2k) to my external WQHD screen, Firefox does not refresh, not reacting to input or mouse until I switch back and forth from another window. So it only refresh/repaint when main window looses and gets focus.

I have to restart firefox to make it works again.

Configuration: Linux debian stable (11) (same on PopOS) CPU: intel 8550 / GPU: Intel HD 620 RAM: 16Gb External monitor connected through usb-c 3.1

It does the same with Thunderbird. My Qt apps and terminals (alacritty) are not impacted.

Updated. See bottom for up-to-date question.

Hello! :) I'm on a pretty fresh install of Debian bullseye. Immediately after launching Firefox ESR, it crashes. Not always, but every ~2nd launch. The Mozilla Crash Reporter "We're Sorry" appears and the crash looks like this in terminal: mars@desktop:~/Desktop$ firefox ExceptionHandler::GenerateDump cloned child 83677 ExceptionHandler::SendContinueSignalToChild sent continue signal to child ExceptionHandler::WaitForContinueSignal waiting for continue signal... mars@desktop:~/Desktop$

I tried making a fresh profile without addons/settings, and it still crashes but less at every ~6-7th launch. However, it does not crash in safe mode, though visiting websites while in safe mode is laggy. Here is the terminal of safe-mode: Missing chrome or resource URL: resource://gre/modules/UpdateListener.jsm Missing chrome or resource URL: resource://gre/modules/UpdateListener.sys.mjs Missing chrome or resource URL: resource://gre/modules/UpdateListener.jsm Missing chrome or resource URL: resource://gre/modules/UpdateListener.sys.mjs Sandbox: Unexpected EOF, op 0 flags 00 path /proc/cpuinfo

Any idea? Thanks in advance!

Extra observations:

• Didn't have these issues with Firefox on Fedora (Wayland) and Gentoo.
• Toggling Caps Lock takes about half a second to activate/deactivate in Firefox, resulting in a lot of accidentally capitalized letters.
• Generally, Firefox seems pretty slow and scrolling through items/websites with images is a bit choppy. Websites load slower compared to my forementioned distros.
• Not sure if it matters, but I installed Debian with automatic/guided (encrypted LVM) and noticed after that my swap size is only 980 MB when my RAM is 16 GB. Just mentioning it in case it's relevant.

System info:

• DE: XFCE with x11.
• Kernel: 5.10.0-21-amd64.
• GPU: NVIDIA contrib non-free driver. Force Composition Pipeline ON. Allow Flipping OFF. TripleBuffer ON.
• CPU: Intel i5 6600K

UPDATE: I found the cause of the crash. If I enable Use hardware acceleration when available, Firefox crashes on launch. If I disable it, it doesn't crash which is nice. BUT, it leads to unbearable lag and puts my CPU usage to 70-100% when dealing with videos or images. This exact thing happens on two fresh installs on different SSDs.

Any advice? Do I need some additional drivers for my Debian install? Thanks!

Info:

• Debian Bullseye.
• Firefox ESR 102.10.0.
• GTX 970 w/ proprietary nvidia-driver.
• GNOME on X11.

I am running Firefox-112.0(64bit) on Debian Bullseye. When I pend Firefox I am presented with a blank page rather that my normal sign in page.

Opening a terminal window and starting Firefox with /opt/firefox/firefox generates the following errors:

comp@AbNormal:~$ /opt/firefox/firefox [GFX1-]: glxtest: VA-API test failed: no supported VAAPI profile found. ATTENTION: default value of option mesa_glthread overridden by environment. ATTENTION: default value of option mesa_glthread overridden by environment. ATTENTION: default value of option mesa_glthread overridden by environment. ATTENTION: default value of option mesa_glthread overridden by environment. [ERROR glean_core] Error setting metrics feature config: Json(Error("EOF while parsing a value", line: 1, column: 0))

If I enter a URL the page opens and is usable.

How can this problem be fixed?

Thanks in advance.