disabled nvidia gpu in nvidia-settings (and rebooted) without any application : OK with just a firefox empty private browsing window : OK with a normal firefox (many tabs & plugins) : OK many apps running : OK enabling nvidia GPU, rebooted without any application : KO
computer is calm, doing a manual lock lead to imediate fan blowing. unlocking and fan calm down. extract from my script logs (I added CPU freq fyi): cpu MHz : 700.142 cpu MHz : 700.025 cpu MHz : 700.346 cpu MHz : 700.285 cpu MHz : 700.037 cpu MHz : 700.094 cpu MHz : 700.109 cpu MHz : 700.109 top - 12:01:18 up 54 min, 1 user, load average: 0.16, 0.46, 0.67 Tasks: 263 total, 1 running, 262 sleeping, 0 stopped, 0 zombie %Cpu(s): 1.5 us, 1.5 sy, 0.0 ni, 97.1 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st MiB Mem : 7860.6 total, 5831.8 free, 963.5 used, 1065.4 buff/cache MiB Swap: 512.0 total, 512.0 free, 0.0 used. 6620.2 avail Mem PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 245 root -51 0 0 0 0 S 6.2 0.0 0:04.87 irq/129-nvidia 2568 laulau 20 0 375224 87192 49688 S 6.2 1.1 0:20.95 Xorg 2772 laulau 20 0 3265100 286588 97372 S 6.2 3.6 27:57.77 gnome-shell 6954 laulau 20 0 26296 3764 3140 R 6.2 0.0 0:00.02 top 1 root 20 0 195328 9612 6764 S 0.0 0.1 0:03.46 systemd 2 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kthreadd cpu MHz : 3400.000 cpu MHz : 3400.341 cpu MHz : 3401.565 cpu MHz : 3401.177 cpu MHz : 3399.907 cpu MHz : 3400.164 cpu MHz : 3403.125 cpu MHz : 3400.692 top - 12:01:28 up 54 min, 1 user, load average: 0.29, 0.48, 0.67 Tasks: 262 total, 2 running, 260 sleeping, 0 stopped, 0 zombie %Cpu(s): 4.0 us, 8.8 sy, 0.0 ni, 87.2 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st MiB Mem : 7860.6 total, 5830.9 free, 964.3 used, 1065.4 buff/cache MiB Swap: 512.0 total, 512.0 free, 0.0 used. 6619.3 avail Mem PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 2772 laulau 20 0 3265100 286948 97372 R 93.8 3.6 28:06.30 gnome-shell 1 root 20 0 195328 9612 6764 S 0.0 0.1 0:03.46 systemd 2 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kthreadd so the problem is between nvidia and gnome-shell on my configuration. and the fact that I want to display seconds in the top bar ! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1814125 Title: [nvidia] gnome-shell eats 100% cpu when seconds display is on and screen is locked To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1814125/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs