I see this same issue in 11.10 with the Intel GM45 chipset and a docking station.
Screensaver kicks in and turns off the monitor and it never comes back. I have to switch to a VT and restart lightdm. I see the drm:drm_edid_block_valid error in dmesg. The 'echo 0 > /sys/module/drm_kms_helper/parameters/poll' workaround resolves the issue. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/712075 Title: [drm:drm_edid_block_valid] *ERROR* EDID checksum is invalid To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/712075/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
