Switch back to XAA is bad because:
1) Ubuntu users will be deprived of textured video and power saving (by the way of fb compression) for a year¹
2) XAA is basically deprecated and its bugs are fixed as second priority. Do you want to release LTS with driver abandoned by upstream?
¹ textured video was disabled on intel driver shipped in 7.10. EXA will be disabled in 8.04. This way Ubuntu users will get those features no sooner than 8.10.
Switch back to XAA is bad because:
1) Ubuntu users will be deprived of textured video and power saving (by the way of fb compression) for a year¹
2) XAA is basically deprecated and its bugs are fixed as second priority. Do you want to release LTS with driver abandoned by upstream?
¹ textured video was disabled on intel driver shipped in 7.10. EXA will be disabled in 8.04. This way Ubuntu users will get those features no sooner than 8.10.