Created attachment 1458483 [details] dmesg After update to 4.17.2/3/4 kernel graphic card only works partial. Only dvi output is working, all other channels did not work anymore. Graphic card is RX 560D
problem persists with kernel 4.17.6
We apologize for the inconvenience. There is a large number of bugs to go through and several of them have gone stale. Due to this, we are doing a mass bug update across all of the Fedora 28 kernel bugs. Fedora 28 has now been rebased to 4.18.10-300.fc28. Please test this kernel update (or newer) and let us know if you issue has been resolved or if it is still present with the newer kernel. If you have moved on to Fedora 29, and are still experiencing this issue, please change the version to Fedora 29. If you experience different issues, please open a new bug report for those.
I still on Fedora 28 and my current kernel is 4.18.17 The problem persists. My graphic card only works with kernel boot parameter amdgpu.dc=0
*********** MASS BUG UPDATE ************** We apologize for the inconvenience. There are a large number of bugs to go through and several of them have gone stale. Due to this, we are doing a mass bug update across all of the Fedora 28 kernel bugs. Fedora 28 has now been rebased to 4.20.5-100.fc28. Please test this kernel update (or newer) and let us know if you issue has been resolved or if it is still present with the newer kernel. If you have moved on to Fedora 29, and are still experiencing this issue, please change the version to Fedora 29. If you experience different issues, please open a new bug report for those.
I can not longer check the failure as I have bought a new graphic card. Sorry!
Thanks for letting us know.