I am trying to run Ubuntu 18.04 on a computer with an AMD processor and AMD Radeon R7 graphics. I believe the driver for AMD Radeon R7 graphics has problems and may be buggy. I have had a problem with Totem which I asked in a separate question, but I have another problem where (sometimes) if I suspend the computer then bring it back to life, I get a hash of colors and pixels and cannot get the computer back without shutting it down (and losing a lot of work).
Is there anything I can do to improve things? Also, is there any place where I can report problems with drivers and possible bugs? What are my options? There is a driver produced by AMD for Ubuntu 16.04 but it doesn't work with the 18.04 kernel.
Thanks in advance for any help you can give.
Update: Please use the latest available driver from AMD. Adding the links here:
Radeon driver (amdgpu-unified) v21.50
Instructions for installation
Please ensure that you uninstall all previous versions, by using:
Exactly the same issue: Can't resume after suspend
Using a laptop with AMD PRO A12-9800B APU, and Ubuntu 18.04 (actually Kubuntu; although this shouldn't really matter)
Realized that this might be a driver issue. Managed to solve by the following steps:
https://www.amd.com/en/support/kb/release-notes/rn-prorad-lin-18-40
https://amdgpu-install.readthedocs.io/en/amd-18.30/install-prereq.html
https://amdgpu-install.readthedocs.io/en/amd-18.30/install-script.html
NOTE: If any of the packages fail to install, due to re-direction loops, you might have to install those packages manually.
After the installation is completed successfully, reboot. This issue should now be resolved.