The 105_fdo_att7409_bug5437.diff (or upstream patch 8746) includes a workaround to figure out monitor specs (see bug #22985, a bug number I know by heart BTW). It involves doing VBE probing instead of the normal driver-asks-card probing. This workaround would break on some other cards/laptops, and was not needed any longer when the normal probing got fixed. The reason it makes VT switching working for you is probably a side effect. We can see this in your logs: (WW) RADEON(0): zero MEMSIZE, probably at D3cold. Re-POSTing via int10.
Most likely it is the POST'ing that does the job. For resume, I think this can be configured in the sleep/resume settings. For VT switching, this must be done in the driver. Of course, there must be a better solution. -- [M6 LY] System lockup when switching VT's or Resume from Suspend https://bugs.launchpad.net/bugs/148408 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
