radeon/KMS: Screen hotplugging does not work
Submitted by Daniel Klaffenbach
Assigned to Default DRI bug account
I noticed that in recent kernel versions the runtime detection of newly added monitors does not work properly.
When I plug in my TV (DVI2HDMI) after booting I cannot enable it. xrandr correctly shows a new screen and I can even enable the output, but the TV screen stays black. Restarting X does not help.
The driver also seems to recognize the port status after plugging it in (/sys/class/drm/card0-DVI-I-2/status) changes from "disconnected" to "connected".
When I plug the HDMI cable in before booting my computer the TV works just fine.
GFX: Radeon HD 3870
Linux: 2.6-git (issue appeared in 2.6.35) with KMS