intel hd620 graphichs and high Xorg CPU usage

bjur · 01-26-2019, 10:21 AM

Hello all, it's my first post here. I'm having some troubles with my intel hd620 (kaby lake i5-8350 cpu). Every action related to 'movement' (scrolling page (~40%cpu), moving windows, or even moving the mouse over stuff eats 15% of cpu) results in high CPU usage. The same tasks on Windows use about 3%. I tried a few distros and kernels already, as well as X and Wayland.
Here's some commands output:

current distro: fedora 29, KDE. Tried also Ubuntu 18.10, Xubuntu, fedora with gnome and few others. Xorg and kwin_x11 processes eats a lot for no reason. Browsers make it even worse.

Code:

glxinfo | grep render
direct rendering: Yes
    GLX_MESA_multithread_makecurrent, GLX_MESA_query_renderer, 
    GLX_INTEL_swap_event, GLX_MESA_copy_sub_buffer, GLX_MESA_query_renderer, 
Extended renderer info (GLX_MESA_query_renderer):
OpenGL renderer string: Mesa DRI Intel(R) UHD Graphics 620 (Kabylake GT2)

Code:

# lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation UHD Graphics 620 (rev 07)

Code:

# uname -a
Linux localhost.localdomain 4.20.3-200.fc29.x86_64 #1 SMP Thu Jan 17 15:19:35 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

whole xorg.0.log:
https://pastebin.com/gmueXRM3

And maybe chrome://gpu

Code:

Canvas: Hardware accelerated
Flash: Hardware accelerated
Flash Stage3D: Hardware accelerated
Flash Stage3D Baseline profile: Hardware accelerated
Compositing: Hardware accelerated
Multiple Raster Threads: Enabled
Native GpuMemoryBuffers: Software only. Hardware acceleration disabled
Out-of-process Rasterization: Disabled
Hardware Protected Video Decode: Hardware accelerated
Rasterization: Hardware accelerated
Skia Deferred Display List: Disabled
Skia Renderer: Disabled
Surface Control: Disabled
Surface Synchronization: Enabled
Video Decode: Hardware accelerated
Viz Service Display Compositor: Enabled
WebGL: Hardware accelerated
WebGL2: Hardware accelerated

Any ideas?

mrmazda · 01-27-2019, 08:15 AM

What is output from:

Code:

inxi -GxxSM

run in Konsole or an XTerm?

The log indicates repeated trouble with the wayland touchpad. Maybe there is a missing driver, poorly selected driver, or a driver conflict that needs to be resolved. Maybe an Xorg session would work better. I don't recall hearing any favorable stories from anyone running Plasma on Wayland. I have two well working Kaby Lakes, but no touchpad on either, nor Wayland.

Edit: https://wayland.freedesktop.org/libi...ng_cursor.html suggests you should report a bug at bugzilla.redhat.com.

business_kid · 01-27-2019, 01:57 PM

I have the even suckier HD4000, and a suckier (i3) cpu, but the cpu doesn't sweat over graphics here. Mind you, I'm not a gamer. Explain your loading - watching youtube, whatever. The cpu load is probably coming from 'software rendering', transferring the gpu workload to your cpu.

You need xf86-video-intel and the intel-vaapi-driver. VAAPI is an inferior form of VDPAU, which is some graphics format to make things sing. Many programs use VDPAU, but not vaapi. Intel gpus can't do vaapi, because they suck. VLC for one uses vaapi if it's there. Plasma may not use it at all. A search for 'plasma performance intel gpu' is not encouraging. Check this avenue out before you start fixing something that may not be broken and post whether or not your Intel gpu is fully supported on plasma.

EDIT: I'm running Slackware64 on X11 with XFCE, a 'low cholesterol' WM. No eye candy here.

mrmazda · 01-27-2019, 02:13 PM

Quote:

Originally Posted by business_kid

You need xf86-video-intel

Almost certainly not. The xf86-video-intel package is on life support only. It hasn't had an official release in 4 years, since long before UHD 620 or Kaby Lake existed. Intel has been paying its driver writers to focus on the modesetting driver included in the server package.

ondoho · 01-28-2019, 01:41 AM

Quote:

Originally Posted by bjur

whole xorg.0.log:
https://pastebin.com/gmueXRM3

Code:

kernel bug: Touch jump detected and discarded.
See https://wayland.freedesktop.org/libi...g-cursors.html for details

over and over again.
i'd start by reading that web page.

business_kid · 01-28-2019, 03:19 AM

Quote:

Originally Posted by mrmazda

Almost certainly not. The xf86-video-intel package is on life support only. It hasn't had an official release in 4 years, since long before UHD 620 or Kaby Lake existed. Intel has been paying its driver writers to focus on the modesetting driver included in the server package.

Ok. I gather it was a cul-de-sac, but I really did not think of the modesetting driver as a replacement. I have a vague notion of looking it up & deciding my GPU was too old for it, but I've been knocked about health-wise a lot since, and couldn't be sure.

That said, the xf86-video-intel works well for me. Modesetting is not an issue. I have the Ivy Bridge. You appear to have driver issues, and software rendering; That's a driver issue. I would at least try it , among other options.

I would search for a driver that claims to do things for your you.

EDIT: I've researched this a bit, and you're right about xf86-video-intel, just bugfixes since 2014. Slackware doesn't supply modesetting AFAICT. Some distros have gone over to modesetting by default (Debian, Ubuntu, Fedora) but you heed to shoehorn & tweak it from what I gather. I ran into loads of people crashing on the Modesetting driver, with conf files secretly pointing at the intel driver. Watch for that. It's difficult to find recent stuff on it. I had to use google's advanced search with 'in the last year' as a condition.

bjur · 01-28-2019, 03:52 AM

Ok, thanks for responses. I've seen this wayland touchpad issue, but I thought it doesn't matter when I'm on x11.
Anyway, here's the inxi output:

Code:

inxi -GxxSM
System:    Host: localhost.localdomain Kernel: 4.20.3-200.fc29.x86_64 x86_64 bits: 64 compiler: gcc v: 8.2.1 
           Desktop: KDE Plasma 5.14.4 tk: Qt 5.11.3 wm: kwin_x11 dm: SDDM 
           Distro: Fedora release 29 (Twenty Nine) 
Machine:   Type: Laptop System: Dell product: Latitude 5490 v: N/A serial: <root required> Chassis: type: 10 
           serial: <root required> 
           Mobo: Dell model: 0DH2HV v: A00 serial: <root required> UEFI: Dell v: 1.7.0 date: 12/25/2018 
Graphics:  Device-1: Intel UHD Graphics 620 vendor: Dell driver: i915 v: kernel bus ID: 00:02.0 
           chip ID: 8086:5917 
           Display: x11 server: Fedora Project X.org 1.20.3 driver: modesetting unloaded: fbdev,vesa 
           compositor: kwin_x11 resolution: 1920x1080~60Hz 
           OpenGL: renderer: Mesa DRI Intel UHD Graphics 620 (Kabylake GT2) v: 4.5 Mesa 18.2.8 compat-v: 3.0 
           direct render: Yes

business_kid · 01-29-2019, 05:18 AM

In a separate post about my own graphics, I gather modesetting is included in xorg-server and is run automatically in the absence of xorg.conf stuff.
https://www.linuxquestions.org/quest...er-4175647103/

So let me unsay anything contrary to those guys.