Dev1 Galaxy Forum / Ceres, legacy nvidia 340.108 driver ruins running Qt software

Re: Ceres, legacy nvidia 340.108 driver ruins running Qt software

dummy@example.com (deepforest) — Mon, 20 Feb 2023 23:09:29 +0000

340.108 last legacy supported driver by linux for this GPU

thouse was my thread at mint forum and there problem was not with Qt

make bug report
https://bugs.debian.org/cgi-bin/bugrepo … ug=1031489

ps Olav, anyway thank you for attention for my question

Re: Ceres, legacy nvidia 340.108 driver ruins running Qt software

dummy@example.com (F_Sauce) — Sat, 18 Feb 2023 12:28:20 +0000

I had a look at the thread mentioned above, and it is now marked as solved. Couple of new threads which i didn't really read through, but if you're still at it it may be worthwhile.

Cheers,
Olav

Re: Ceres, legacy nvidia 340.108 driver ruins running Qt software

dummy@example.com (F_Sauce) — Fri, 17 Feb 2023 18:37:03 +0000

According to this thread: https://forums.linuxmint.com/viewtopic. … 3&start=20 it might be the Kernel which has to be downgraded if you insist on getting that card working properly with NVIDIAs drivers (any), (I read through it very briefly so might have missed something).

Re: Ceres, legacy nvidia 340.108 driver ruins running Qt software

dummy@example.com (F_Sauce) — Fri, 17 Feb 2023 18:22:32 +0000

Hello

Maybe worth a try perhaps: https://www.nvidia.com/Download/Find.aspx?lang=en-uk, downgrade driver version?

Olav

PS
What desktop environment are you on by the way?

Ceres, legacy nvidia 340.108 driver ruins running Qt software

dummy@example.com (deepforest) — Tue, 14 Feb 2023 00:29:48 +0000

On Ceres same situation that at Sid

https://unix.stackexchange.com/question … t-software

With nouveau all working good. But after installing legacy 340.108 nvidia driver for my gf9800 i have Segmentation Fault at launching all Qt GUI software. And opposite, Qt works again after uninstalling nvidia driver.

But very strange that if i run Qt soft via debugging tools such gdb or strace i have no errors.

gdb ./doomseeker
strace ./doomseeker

Same is with Qbittorrent
https://i.stack.imgur.com/ehbCm.png

and 2048-Qt
https://i.stack.imgur.com/OTV6q.png

Only two Qt application starting normally - CMake GUI and Audacious Qt theme

Segmentation fault

#include 
int main(int argc, char **argv)
{
  QApplication app(argc, argv);
  return 0;
}

Who can fix this? Debian or Qt developers?