Dell 7490 locks up shortly after boot if left idle
Steps to reproduce:
Install the OS on the Dell 7490. Boot it and then let it sit on the login screen for a few seconds. It reliably locks up (requiring a force power off by holding down the power button). The lock up does not happen if I continually keep the machine active by moving my finger on the touchpad, but as soon as I leave it alone for a couple seconds it locks up. This issue reproduces 100% of the time when running from the hard drive. When live booting from a USB I have so far not seen the hang.
- uname -m: x86_64
- uname -r: drm-tip (efc7f880143d6fe75922ad393045665c8ea60f57)
- Linux distribution: CloudReady
- Machine: Dell Latitude 7490
- dmesg: dell7490-lockup-dmesg
I bisected this to 4f88f8747fa43c97c3b3712d8d87295ea757cc51, "drm/i915/gt: Schedule request retirement when timeline idles".