[kde] [Bug 406952] New: Problems with ATI/Radeon 8570D cards

[Leon]

https://bugs.kde.org/show_bug.cgi?id=406952

            Bug ID: 406952
           Summary: Problems with ATI/Radeon 8570D cards
           Product: kde
           Version: unspecified
          Platform: Compiled Sources
                OS: Linux
            Status: REPORTED
          Severity: major
          Priority: NOR
         Component: general
          Assignee: unassigned-bugs at kde.org
          Reporter: support at bb-services.co.za
  Target Milestone: ---

SUMMARY of Problems:
With Fedora 28 one has to edit the LIVE USB Disk startup paramater to include
"nomodeset" or "radeon.modeset=0" for the installer to work, otherwise the
machine keeps rebooting. 

With Fedora 29 the LIVE disk fails to start the installer even when starting in
Troubleshooting -> load basic VGA mode. Fedora 29 fails to work on my machine.
cannot get past radeon configure issue.

On Fedora 28, after installation, one needs to permanently add
"radeon.modeset=0 on the grub startup.

When started, only resolution "1024x768" is available to the Radeon 8570D card.
Installing amd-x11-drv-amdgpu package restored the resolution (it seems) until
a kernel update forced it back to only 1024x768. Since then, I have not been
able to get the radeon card to activate.

- Setting radeon.modeset=1 on the kernel reboots the machine on the first pass,
then boots in modeset mode but locks the mouse the and keyboard therafter.
Cannot boot with anything but nomodeset or radeon.modeset=0

- running modprobe radeon modeset=1 after login brings up a blank screen and
hangs. 


STEPS TO REPRODUCE
1. Install a F28 KDE spin on a AMD 64bit with Radeon 8570D graphics card


OBSERVED RESULT
With Fedora 29, the installation no longer works
with Fedora 28, one has to tweak things to get the display driver to work to
start installation
with Fedora 27, no problems was visible during install or use, except 3D
acceleration was not working.

Since it seems to get progressively worse (27 - working, 28 - somewhat working,
F28 - Not working at all), it seems like a bug is being introduced and moving
away from functionality.

EXPECTED RESULT
The basic kernel should be able to support at basic graphical install for F29,
and F28 should be able to handle the ATI/Radeon card as it did with F27

The basic kernel drivers does seem to work if enough tweaks is done, but it
never stays permanent, and my latest tweaks I used to do now no longer works
and the display is stuck at 1024x768 no matter what worked in the past.

- It seems the resolution reverted back to 1024x768 as the only option after a
kernel update or installing kdenlive. but uninstalling it again did not fix the
issue thereafter, so not sure if related.

I know the basic Linux drivers can work, I just need to figure out what is
blocking it. playing with blacklist and modprobe no no longer gets me past
issues, and am unable to upgrade to Fedora 29.

I now need expert advice.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Fedora 28 64Bit
KDE Plasma Version: 5.13.4
KDE Frameworks Version: 5.55.0
Qt Version: 5.11.3

ADDITIONAL INFORMATION

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