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I have just recently installed Ubuntu 18.10 on my desktop. There is an issue which I can't understand: if I start a session with Wayland (choosing this while logging in), the system noticeably slower. I mean, even the mouse and typing are with a small (but noticeable) delay. If I run htop, I see that all the cores are constantly 40-50% busy, and the most CPU-hungry processes are gnome-shell.

System info

Output of inxi -SCG (v. 3.0.24-00) under Wayland:

System:
  Host: mydesktop Kernel: 4.18.0-13-generic x86_64 bits: 64 
  Desktop: Gnome 3.30.1 Distro: Ubuntu 18.10 (Cosmic Cuttlefish) 
CPU:
  Topology: 6-Core model: Intel Core i5-9600K bits: 64 type: MCP 
  L2 cache: 9216 KiB 
  Speed: 1482 MHz min/max: 800/4600 MHz Core speeds (MHz): 1: 2315 2: 2317 
  3: 2318 4: 2318 5: 2320 6: 2320 
Graphics:
  Device-1: Intel driver: i915 v: kernel 
  Display: wayland server: X.Org 1.20.1 driver: i915 
  resolution: 3840x2160~30Hz 
  OpenGL: renderer: llvmpipe (LLVM 7.0 256 bits) v: 3.3 Mesa 18.2.2

The same under X11:

System:
  Host: mydesktop Kernel: 4.18.0-13-generic x86_64 bits: 64 
  Desktop: Gnome 3.30.1 Distro: Ubuntu 18.10 (Cosmic Cuttlefish) 
CPU:
  Topology: 6-Core model: Intel Core i5-9600K bits: 64 type: MCP 
  L2 cache: 9216 KiB 
  Speed: 801 MHz min/max: 800/4600 MHz Core speeds (MHz): 1: 800 2: 800 
  3: 800 4: 800 5: 800 6: 800 
Graphics:
  Device-1: Intel driver: i915 v: kernel 
  Display: x11 server: X.Org 1.20.1 driver: i915 resolution: 3840x2160~30Hz 
  OpenGL: renderer: llvmpipe (LLVM 7.0 256 bits) v: 3.3 Mesa 18.2.2

I have a built-in Intel graphic card, the motherboard is ASRock Z390 Extreme4.

UPD

Under X11, there is another issue though. If I try to open the system settings, I am forcefully logged out. I created a separate question about this.

Disclaimer: I am not that advanced Ubuntu/Linux user.

Where can I look into the problem in my Ubuntu? What to start with?

Yauhen Yakimenka
  • 791
  • Please update your post with the output of inxi -SCG -! 31 -y 80. Also if you made edits to /etc/gdm3/custom.conf. Yoy could help developers by debuging wayland with this tool (here in discurse). – Pablo Bianchi Jan 20 '19 at 16:28
  • I get Error 22: Unsupported option: -! Check -h for correct parameters. - what should be the correct option? – Yauhen Yakimenka Jan 20 '19 at 21:14
  • Maybe you have an older version of inxi (mine is 2.3.56-00 (2018-01-17)). Don't worry, just the output of inxi -SCG should be OK. Did you update your drivers with sudo ubuntu-drivers autoinstall? You can compare both with some benchmark tool like gtkperf or pts (phoronix-test-suite package) and edit your question with the results. – Pablo Bianchi Jan 20 '19 at 22:52
  • inxi output added. Running sudo ubuntu-drivers autoinstall gives 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. – Yauhen Yakimenka Jan 21 '19 at 09:49
  • Running gtkperf under Wayland logged me out from Ubuntu (perhaps, some other issues are present). Running the same under X.org finished fine in 1.21 s. – Yauhen Yakimenka Jan 21 '19 at 10:00
  • Apparently, there is another issue with X11. I updated the post. – Yauhen Yakimenka Jan 30 '19 at 13:25
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    I would add inxi -G from an X11 session to compare. Your results of inxi from wayland have 2 significant issues, "OpenGL: renderer: llvmpipe" will result in poor performance, the resolution @ ~30Hz seems wrong also. Or you could try an install of 19.04-dev, maybe your hardware is better supported in wayland – doug Jan 30 '19 at 13:59
  • @doug I added full output of X11 session. What can I change llvmpipe to in order to improve performance? It's my working computer, so I can't really play with dev versions of OS. :( – Yauhen Yakimenka Jan 30 '19 at 14:21
  • @doug and what is wrong with 30Hz? The current configuration doesn't support 60Hz in 3840x2160 resolution - and I prefer more stuff on the screen, as I don't notice any difference 30Hz vs 60 Hz. – Yauhen Yakimenka Jan 30 '19 at 14:35
  • Well if 30Hz is the limit, fine . You're getting the same as far as llvmpipe being used in X11 also. If you're fine with that in X11 instead of preferred Mesa DRI then just use X11 & try to solve your issue with X11. I guess you could try a newer kernel at some point from the kernel-ppa/mainline.. – doug Jan 30 '19 at 14:55
  • I've just installed Mesa DRI according to this: http://ubuntuhandbook.org/index.php/2018/05/install-mesa-18-0-4-ubuntu-18-04-lts/ - and now, when I am trying to log in to Wayland session, I am being logged out immediately. – Yauhen Yakimenka Jan 30 '19 at 15:45
  • ...on the other hand, newer Mesa solved my other problem (with opening Settings under X11). – Yauhen Yakimenka Jan 30 '19 at 16:25

0 Answers0