https://bugzilla.kernel.org/show_bug.cgi?id=71461
--- Comment #21 from Alex Deucher alexdeucher@gmail.com --- (In reply to Tom Yan from comment #20)
I did some more tests. Seems to me that the blank occured with dis/reconnection in X is also related to DPMS toggling. Any similar code in ddx driver I can try removing? Since in console everything is fine so far :P
With KMS, the kernel controls all modesetting. All the ddx does is call down into the kernel. There's no difference between the kernel and the ddx, it's all calling the same code.