Comment 38 for bug 1767648

I have an HD 5870.
I'm not using any additional or proprietary drivers (according to that tab in Software & Updates); however, 'Proprietary drivers for devices' is enabled in the Ubuntu Software tab in Software & Updates.

The only PPAs I have are for Google Chrome, PlayOnLinux, and Alexander Larsson's Launchpad.

For my video card information:
Cypress XT [Radeon HD 5870]
Vendor: AMD/ATI
Phys. ID: 0
version: 00
clock: 33MHz
driver: radeon
I'm not sure exactly which information you need, so here is a pastebin of the output of 'modinfo radeon': https://pastebin.com/axFRR5hw.

I'm honestly not sure what to provide, so if you want the output of some commands, I can provide those easily if you tell me which/what you'd like. I didn't find any GUI-level information on my drivers or what packages they are, so that's the best I could find in the time I have for this.