A Possible Workaround For AMD APUs With Stability Issues On Recent Kernels
Written by Michael Larabel in AMD on 3 January 2020 at 07:29 AM EST. 17 Comments
AMD --
While we have found recent Linux kernels paired with latest motherboard BIOS releases to work out generally well for recent AMD APUs, not everyone has been having a trouble-free experience on recent kernels. But an affected user has discovered a possible workaround if hitting stability issues.

There has been a bug report since October stemming from graphics ring timeouts since Linux 5.2 and 5.3 kernels with multiple users affected. Those ring timeouts ultimately lead to graphics no longer functioning until rebooting the system.

The workaround discovered by a user is booting with amdgpu.noretry=0 as a kernel module parameter for AMDGPU. This comes after AMD set no-retry as the default in an effort to enhance performance by disabling retry faults.


Judging from this Gitlab issue, the amdgpu.noretry=0 and an affected user who alerted me to that ticket, it seems to be helping AMD APU owners on Linux ~5.4 that had been hitting stability issues. So should you be affected, give that option a whirl and chime in if it helped your situation.
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Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter or contacted via MichaelLarabel.com.

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