Created attachment 137254 [details]
Linux 4.14.13 messages

On a Asus F2A85-M PRO with an AMD A6-6400K APU with Radeon HD Graphics and
Linux 4.14.13 there is a regression, that resume time of the radeon module is
two seconds. `sleepgraph.py` [1] is used to benchmark this.

> radeon @ 0000:00:01.0 {radeon} async_device (Total Suspend: 304.076 ms Total Resume: 2138.431 ms)

The call below causes this.

> radeon_ib_ring_tests [radeon] (1589.415 ms @ 6905.136004)

[1] https://01.org/suspendresume
[2] https://github.com/01org/pm-graph