Public bug reported: I had the same problem, exactly the same look with the latest kernel, of Xubuntu18 and also I tried UbuntuBudgie18, and both did the same. On my laptop (NC8000) the screen looks like someone has disrupted the pixels with little rectangular stuff. I had to go back a kernel via Grub and advanced options before I could read properly anything on the screen. And yes, I have just two 32 bit computers, although I also have 64 bit. But both 32 bit ones with the newest kernels for xubuntu or Budgie mess up the screen, and the kernel before that doesn't. I imagine that’s the case with all of the newer kernels with Kubuntu, Lubuntu etc..
And the kernels are 5.0.037 which works. And 5.0.047 which has the distortion shared. here is the lshw -c video listings for the laptop (32 bit) *-display description: VGA compatible controller product: RV350/M10 / RV360/M11 [Mobility Radeon 9600 (PRO) / 9700] vendor: Advanced Micro Devices, Inc. [AMD/ATI] physical id: 0 bus info: pci@0000:01:00.0 version: 00 width: 32 bits clock: 66MHz capabilities: agp agp-2.0 pm vga_controller bus_master cap_list rom configuration: driver=radeon latency=64 mingnt=8 resources: irq:10 memory:98000000-9fffffff ioport:2000(size=256) memory:90400000-9040ffff memory:c0000-dffff And here for the old Dell 32 bit desktop optiplex gx260 *-display description: VGA compatible controller product: RV200 [Radeon 7500/7500 LE] vendor: Advanced Micro Devices, Inc. [AMD/ATI] physical id: 0 bus info: pci@0000:01:00.0 version: 00 width: 32 bits clock: 66MHz capabilities: agp agp-2.0 pm vga_controller bus_master cap_list rom configuration: driver=radeon latency=64 mingnt=8 resources: irq:16 memory:f0000000-f7ffffff ioport:ec00(size=256) memory:ff8f0000-ff8fffff memory:c0000-dffff ** Affects: ubuntu Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1896378 Title: xubuntu kernel causes rectangular screen fluttering To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1896378/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs