Palemoon kills login session after Ubuntu 24.04.1 upgrade

[bernardm]

Operating system:Ubuntu 24.04.1 LTS
Browser version:33.3.1
32-bit or 64-bit browser?:64
Problem URL:
Browser theme (if not default):
Installed add-ons:
Installed plugins: (about:plugins):

After the Ubuntu LTS upgrade on my standby PC, Palemoon 33.1.1 loaded, displayed for about 20 seconds, then the login session died.
I just installed the 33.3.1 DEB from kannegieser.net - apparently successfully - but the problem remains: a brief display, then a collapse back to login.

The /var/log/Xorg.0.log.old is attached as Xorg.0.old.log ...


If possible, please include the output of help->troubleshooting information (as text):

**PASTE troubleshooting information here**

[Nuck-TH]

crocus strikes once again!
its versions that don't support glsl 1.30 seriously should be blacklisted.

you need to disable hardware acceleration or if possible update kernel and mesa further to have newer crocus version.

[bernardm]

Is there any way of starting PM with hardware acceleration turned off? - On the problem pc I can't get to Tools/Preferences before the login session dies ...
Ubuntu 24.04 provides a lot of packages for gls*, but no reference to "glsl 1.30"; can you give me some closer pointer to what's needed?

PM used to work on that standby pc before the ubuntu upgrade, and works well for me on my primary pc - where hardware acceleration *is* OFF.

[Moonchild]

Hold down the Shift key while starting the browser and it should pop up in the safe mode dialog and allowing to start the browser in safe mode, allowing you to start it and make the necessary preference change.
Alternatively, start it from the command line with --safe-mode:

Code: Select all

./palemoon --safe-mode

[bernardm]

Many thanks!
I started in safe mode from the command line; PM opened in safe mode, but with no mouse pointer, and then crashed the login session again, after 20 seconds or so.
Xorg.log.old shows (but I transcribe this manually from another screen!): "Failed to compile FS: ):1(10): error: GLSL is not supported. Supported versions are: 1.10, 1.20, and 1.00 ES"
The MESA on the PC in question is the same version as on the laptop where PM (33.1.1) works.
glxinfo on the working box shows "OpenGL version string: 4.6 (Compatibility Profile) Mesa 24.0.9-0ubuntu0.1"
glxinfo on the problem standby pc behaves very differently, but appears to show GLSL version string as 1.2, with MESA 24.09

Perhaps the standby box, an HP Pentium (!), simply can't support GLSL above 1.2 ??
Firefox works on that box; so I may be forced back to using that browser ... ?

[bernardm]

Sorry - for "Xorg.log.old", read "Xorg.0.log.old", of course ...

[bernardm]

Also, I've looked in prefs.js; but can't see anything there that might suggest that hardware acceleration is ON on that standby box ...