from xrandr --verbose:
00ffffffffffff004dd9901001010101 090d01030e261e8cea6f89a25a4d9424 1a484ca1080081808140010101010101 010101010101302a009851002a403070 1300782d1100001e000000fd0037411c 410b000a202020202020000000fc0053 444d2d5339310a2020202020000000ff 00343235393931330a202020202000d3
Found bug #712075 which has a similar error, although not sure it's the same issue yet.
from xrandr --verbose:
00fffffffffff f004dd990100101 0101 e8cea6f89a25a4d 9424 180814001010101 0101 02a009851002a40 3070 01e000000fd0037 411c 0202020000000fc 0053 a20202020200000 00ff 1330a2020202020 00d3
090d01030e261
1a484ca108008
0101010101013
1300782d11000
410b000a20202
444d2d5339310
0034323539393
Found bug #712075 which has a similar error, although not sure it's the same issue yet.