Arch Linux

rkelly

Member

Registered: 2012-08-07

Posts: 5

KDE System Garbled/Tearing/Slow Refreshing Fonts After Recent Update

After I ran pacman -Syu around March 29th, I started to experience font problems. Noticed it first in Konsole--as I typed, the font would appear garbled, and response was slow. If I waited about 5 seconds, the screen would refresh and things would look OK. Until I typed some more..

Affected programs:

- Konsole
- Kate text editor
- Firefox

Not affected at all:

- UXTerm
- urxvt
- Brave (based on Chromium, I think)

I would have thought it was a KDE/Plasma issue (and it may be), except for seeing the same issue with Firefox.

What I've tried so far is:

- downgrading ttf-inconsolata package (based on another recent post)
- rebooting
- updating a few more times, with reboots after each one

None of these have worked.

Any ideas what to try next?

Thanks!

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 21,736

Re: KDE System Garbled/Tearing/Slow Refreshing Fonts After Recent Update

What's your graphics card and driver? If it's intel that might be a regression in the new mesa opengl driver, see https://wiki.archlinux.org/index.php/In … ver_(i965) for how to switch that to the older implementation.

Last edited by V1del (2020-04-02 20:39:31)

rkelly

Member

Registered: 2012-08-07

Posts: 5

Re: KDE System Garbled/Tearing/Slow Refreshing Fonts After Recent Update

Thanks, V1del,

$ lspci
..
00:02.0 VGA compatible controller: Intel Corporation UHD Graphics 630 (Desktop)
..

$ lshw
..
        *-display
             description: VGA compatible controller
             product: UHD Graphics 630 (Desktop)
             vendor: Intel Corporation
             physical id: 2
             bus info: pci@0000:00:02.0
             version: 00
             width: 64 bits
             clock: 33MHz
             capabilities: vga_controller bus_master cap_list rom
             configuration: driver=i915 latency=0
             resources: irq:138 memory:de000000-deffffff memory:c0000000-cfffffff ioport:f000(size=64) memory:c0000-dffff
..

$ glxinfo | grep -i vendor
server glx vendor string: SGI
client glx vendor string: Mesa Project and SGI
    Vendor: Intel (0x8086)
OpenGL vendor string: Intel

rkelly

Member

Registered: 2012-08-07

Posts: 5

Re: KDE System Garbled/Tearing/Slow Refreshing Fonts After Recent Update

This doesn't seem to be the issue. I tried two of the tips on the page

MESA_LOADER_DRIVER_OVERRIDE=i965 environmental variable

AND

/etc/X11/xorg.conf.d/20-intel.conf
Section "Device"
  Identifier "Intel Graphics"
  Driver "intel"

  Option "TearFree" "true"
EndSection

Rebooted, and am still seeing the issue.

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 21,736

Re: KDE System Garbled/Tearing/Slow Refreshing Fonts After Recent Update

Remove that config file and xf86-video-intel, that can also often contribute.