an old bug, but my X21 (2662) has the same problem with release 10.10. Adding quirk-dpms-suspend also solves it. I modified 20-video-quirk-pm-ibm.quirkdb accordingly with success.
an old bug, but my X21 (2662) has the same problem with release 10.10. Adding quirk-dpms-suspend also solves it. I modified 20-video- quirk-pm- ibm.quirkdb accordingly with success.