** Attachment added: "shell-example-4.png" https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1867668/+attachment/5337651/+files/shell-example-4.png
** Description changed: 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). + the system. The background image has some green/violet/black 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 + The issues are reprodicable 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 gnome-shell: - Installed: 3.35.91-1ubuntu2 - Candidate: 3.35.91-1ubuntu2 - Version table: - *** 3.35.91-1ubuntu2 500 - 500 http://archive.ubuntu.com/ubuntu focal/main amd64 Packages - 100 /var/lib/dpkg/status + Installed: 3.35.91-1ubuntu2 + Candidate: 3.35.91-1ubuntu2 + Version table: + *** 3.35.91-1ubuntu2 500 + 500 http://archive.ubuntu.com/ubuntu focal/main amd64 Packages + 100 /var/lib/dpkg/status ~> gsettings get org.gnome.mutter experimental-features ['x11-randr-fractional-scaling'] ~> uname -r 5.4.0-14-generic hwinfo (videocard, monitor): 38: PCI 02.0: 0300 VGA compatible controller (VGA) - [Created at pci.386] - Unique ID: _Znp.pq3kk9M9L4C - SysFS ID: /devices/pci0000:00/0000:00:02.0 - 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: 0x2ffa000000-0x2ffaffffff (rw,non-prefetchable) - Memory Range: 0x2fa0000000-0x2fafffffff (ro,non-prefetchable) - I/O Ports: 0xe000-0xe03f (rw) - Memory Range: 0x000c0000-0x000dffff (rw,non-prefetchable,disabled) - IRQ: 161 (64308 events) - Module Alias: "pci:v00008086d00005917sv000017AAsd0000225Cbc03sc00i00" - Driver Info #0: - Driver Status: i915 is active - Driver Activation Cmd: "modprobe i915" - Config Status: cfg=new, avail=yes, need=no, active=unknown + [Created at pci.386] + Unique ID: _Znp.pq3kk9M9L4C + SysFS ID: /devices/pci0000:00/0000:00:02.0 + 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: 0x2ffa000000-0x2ffaffffff (rw,non-prefetchable) + Memory Range: 0x2fa0000000-0x2fafffffff (ro,non-prefetchable) + I/O Ports: 0xe000-0xe03f (rw) + Memory Range: 0x000c0000-0x000dffff (rw,non-prefetchable,disabled) + IRQ: 161 (64308 events) + Module Alias: "pci:v00008086d00005917sv000017AAsd0000225Cbc03sc00i00" + 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) + [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) -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1867668 Title: Visual artifacts in Gnome Shell after upgrading to 20.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1867668/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
