Arch Linux

Mischa85

Member

Registered: 2020-12-06

Posts: 17

[GNOME / Mutter] Jerky, framedrops, unstable performance

Hi all,

I've been quite hesitant to post on this issue, because I've wanted to give Wayland a chance on the new NVIDIA 470 driver. I have since built a new system, reinstalled and tried both Wayland and X11. Performance is as bad on Wayland as it is on X11. Here are the symptoms:

glxgears rendering about 285 of the 300 frames in a 5.0 second period
fullscreen video is dropping frames constantly
vsynctester.com is just never stable, spikes all over the place

The situation becomes even worse when running refresh rates other than 60 Hz. On 50 Hz GNOME is really unbearable to use as it's stuttering and jerking along.

What is going on? None of this is any issue on eg. KDE, but I would really love to get GNOME to work.

System:    Host: knaagbeest Kernel: 5.12.12-arch1-1 x86_64 bits: 64 compiler: gcc v: 11.1.0 Desktop: GNOME 40.2 
           Distro: Arch Linux 
Machine:   Type: Desktop Mobo: Micro-Star model: X399 GAMING PRO CARBON AC (MS-7B09) v: 1.0 serial: <superuser required> 
           UEFI: American Megatrends v: 1.D6 date: 02/05/2021 
CPU:       Info: 12-Core model: AMD Ryzen Threadripper 1920X bits: 64 type: MT MCP arch: Zen rev: 1 cache: L2: 6 MiB 
           flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm bogomips: 168033 
           Speed: 2744 MHz min/max: 2200/3500 MHz boost: enabled Core speeds (MHz): 1: 2744 2: 1857 3: 1891 4: 1892 5: 4089 
           6: 1864 7: 1857 8: 1888 9: 1893 10: 2046 11: 2199 12: 2110 13: 1855 14: 2183 15: 2186 16: 1891 17: 1891 18: 1889 
           19: 1891 20: 1894 21: 2192 22: 2032 23: 2173 24: 2195 
Graphics:  Device-1: Blackmagic Design DeckLink Quad 2 driver: blackmagic-io v: 12.1a9 bus-ID: 0e:00.0 
           Device-2: Blackmagic Design DeckLink Quad 2 driver: blackmagic-io v: 12.1a9 bus-ID: 0f:00.0 
           Device-3: Conexant Systems CX23880/1/2/3 PCI Video and Audio Decoder driver: cx8800 v: 1.0.0 bus-ID: 11:00.0 
           Device-4: NVIDIA TU104 [GeForce RTX 2060] driver: nvidia v: 470.42.01 bus-ID: 42:00.0 
           Display: wayland server: X.Org 1.20.99.1 compositor: gnome-shell driver: loaded: nvidia resolution: 
           1: 1920x1200~60Hz 2: 1920x1200~60Hz 
           OpenGL: renderer: NVIDIA GeForce RTX 2060/PCIe/SSE2 v: 4.6.0 NVIDIA 470.42.01 direct render: Yes 
Network:   Device-1: Intel I211 Gigabit Network vendor: Micro-Star MSI driver: igb v: kernel port: 1000 bus-ID: 09:00.0 
           IF: enp9s0 state: up speed: 100 Mbps duplex: full mac: 30:9c:23:89:e7:f3 
           IF-ID-1: docker0 state: down mac: 02:42:7e:20:71:72 
Drives:    Local Storage: total: 3.46 TiB used: 1.86 TiB (53.7%) 
Info:      Processes: 455 Uptime: 17m Memory: 31.28 GiB used: 2.73 GiB (8.7%) Init: systemd Compilers: gcc: 11.1.0 
           clang: 12.0.0 Packages: 1292 Shell: Bash v: 5.1.8 inxi: 3.3.04

Last edited by Mischa85 (2021-06-25 19:26:16)

CarbonChauvinist

Member

Registered: 2012-06-16

Posts: 413

Website

Re: [GNOME / Mutter] Jerky, framedrops, unstable performance

Isn't it known that gnome wayland and proprietary Nvidia don't play well? I thought to even start a Wayland session with gdm you have to manually override defaults (see wiki).

https://wiki.archlinux.org/title/GDM#Wa … DIA_driver

https://wiki.gnome.org/Initiatives/Wayland/NVIDIA

Last edited by CarbonChauvinist (2021-06-25 23:22:05)

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"the wind-blown way, wanna win? don't play"

Mischa85

Member

Registered: 2020-12-06

Posts: 17

Re: [GNOME / Mutter] Jerky, framedrops, unstable performance

The new 470 driver supports accelerated Xwayland, which indeed works, although jerky. To enable the use of Wayland on proprietary NVIDIA enabling KMS is enough. There doesn't seem to be any blockers present.

But this is all non-relevant, as the same issues have been plaguing X11 and proprietary NVIDIA since 3.x something. Mutter seems to be having a problem with proprietary NVIDIA, no matter which protocol is being used.

Last edited by Mischa85 (2021-06-26 00:06:36)