I've updated to Ubuntu 20.04 a couple of weeks ago, and there are some minor (but pretty annoying) issues with Gnome Shell every time I load the system. The background image has some green/violet visual artifacts, and the text elements in Gnome Shell incorrectly display some of the symbol. Changing the background image removes the artifacts until the next reboot (but if I select the previous one without rebooting, then I still see the same artifacts, so it's probably cached somewhere). Restarting the shell via Alt+F2 `r` usually removes the artifacts from the background image, but the text issues are still present.
The issues are reproduced with and without extensions, with 1.0, 1.5 and 2.0 display scaling factors applied, and they are not user-specific (i.e. I was able to reproduce them after creating a new user from scratch)
As far as I can say, only Gnome Shell is affected. All the applications (including Gnome/GTK apps like Geary, Gedit, Tilix, both "native" and flatpak) work fine without any issues
Sometimes, the application icons are also affected (as you can see on one of the attached screenshots)
I've updated to Ubuntu 20.04 a couple of weeks ago, and there are some minor (but pretty annoying) issues with Gnome Shell every time I load the system. The background image has some green/violet visual artifacts, and the text elements in Gnome Shell incorrectly display some of the symbol. Changing the background image removes the artifacts until the next reboot (but if I select the previous one without rebooting, then I still see the same artifacts, so it's probably cached somewhere). Restarting the shell via Alt+F2 `r` usually removes the artifacts from the background image, but the text issues are still present.
The issues are reproduced with and without extensions, with 1.0, 1.5 and 2.0 display scaling factors applied, and they are not user-specific (i.e. I was able to reproduce them after creating a new user from scratch)
As far as I can say, only Gnome Shell is affected. All the applications (including Gnome/GTK apps like Geary, Gedit, Tilix, both "native" and flatpak) work fine without any issues
Sometimes, the application icons are also affected (as you can see on one of the attached screenshots)
~> lsb_release -rd
Description: Ubuntu Focal Fossa (development branch)
Release: 20.04
~> apt-cache policy gnome-shell archive. ubuntu. com/ubuntu focal/main amd64 Packages dpkg/status
gnome-shell:
Installed: 3.35.91-1ubuntu2
Candidate: 3.35.91-1ubuntu2
Version table:
*** 3.35.91-1ubuntu2 500
500 http://
100 /var/lib/
~> gsettings get org.gnome.mutter experimental- features fractional- scaling' ]
['x11-randr-
~> uname -r
5.4.0-14-generic
hwinfo (videocard, monitor): pci0000: 00/0000: 00:02.0 0x2ffaffffff (rw,non- prefetchable) 0x2fafffffff (ro,non- prefetchable) 0x000dffff (rw,non- prefetchable, disabled) 00005917sv00001 7AAsd0000225Cbc 03sc00i00"
38: PCI 02.0: 0300 VGA compatible controller (VGA)
[Created at pci.386]
Unique ID: _Znp.pq3kk9M9L4C
SysFS ID: /devices/
SysFS BusID: 0000:00:02.0
Hardware Class: graphics card
Model: "Intel UHD Graphics 620"
Vendor: pci 0x8086 "Intel Corporation"
Device: pci 0x5917 "UHD Graphics 620"
SubVendor: pci 0x17aa "Lenovo"
SubDevice: pci 0x225c
Revision: 0x07
Driver: "i915"
Driver Modules: "i915"
Memory Range: 0x2ffa000000-
Memory Range: 0x2fa0000000-
I/O Ports: 0xe000-0xe03f (rw)
Memory Range: 0x000c0000-
IRQ: 161 (64308 events)
Module Alias: "pci:v00008086d
Driver Info #0:
Driver Status: i915 is active
Driver Activation Cmd: "modprobe i915"
Config Status: cfg=new, avail=yes, need=no, active=unknown
43: None 00.0: 10002 LCD Monitor
[Created at monitor.125]
Unique ID: rdCR.R7Dpg_aaVOC
Parent ID: _Znp.pq3kk9M9L4C
Hardware Class: monitor
Model: "LG Display LCD Monitor"
Vendor: LGD "LG Display"
Device: eisa 0x058b
Resolution: 2560x1440@60Hz
Size: 309x174 mm
Year of Manufacture: 2016
Week of Manufacture: 0
Detailed Timings #0:
Resolution: 2560x1440
Horizontal: 2560 2608 2640 2720 (+48 +80 +160) -hsync
Vertical: 1440 1450 1455 1481 (+10 +15 +41) +vsync
Frequencies: 241.69 MHz, 88.86 kHz, 60.00 Hz
Config Status: cfg=new, avail=yes, need=no, active=unknown
Attached to: #38 (VGA compatible controller)