Kernel 4.14.x kgd2kfd_probe failed Fedora 27 AMD Graphics
I have a HP laptop with i5 7xxx and amd radeon 520 2gb ddr3 hardware, and after upgrade the linux kernel from 4.13.x to 4.14.x (4.14.3-300.fc27.x86_64) the Amd graphic support have lost. How can i fix it? or, maybe the next version could be fixed?
Can you give more details about what isn't working? Does booting with the previous kernel still work? That message about the probe failing is just a warning, not a problem.
Same problem occurred with me i updated from fedora 26 to 27 and when booting the system it starts in the generic mode and it starts in emergency mode It shows the error - kfd kfd : kgd2kfd_probe failed And booting with thw old version also opens in emergency mode If anybody has the solution please share it
Then the problem is something else unrelated to that message. When it goes to emergency mode it gives you some info about how to find out what's wrong. Try running
journalctl -xeand see what it says. I think there's also a reference to a file that has information to help. See if you can look at it or copy it off somehow.I have the same problem. I ran journalctl -xe and it did not provide any useful information. The best information I could find was this: https://unix.stackexchange.com/questi... But after people raised similar questions the answers were not helpful or refused the question (expecting the users with problems to have more programming knowledge than they probably had).
When I booted the 4.13 kernel, the amd card worked. I tested it with Opensuse tumbleweed (kernel 4.14.x) and I had the same problem, so I believe it's something about kernel 4.14.x. I did this question in the spanish ask.fedora and a guy told me something about enabling IOMMU from the BIOS. I don't know what is that :S