During boot the purple screen vanishes, replaced by a black screen with one line of text
 INFO@wl_cfg80211_attach Registered CFG80211 phy
for a few seconds then returns to normal. Boot works fine and wifi works fine.
This is the 2nd Ubuntu install on this netbook. The first time I didn't get this message. I subsequently screwed the system up badly enough that I decided to do a clean re-install, and this message started appearing.
Everything works, but I really don't want this message showing up during boot.
Prior searching for answers to this problem have involved suggestions to remove the wifi driver and install a different one, but in every case, the questioner reported that it didn't work…However, these questioners also did not have working wifi, and I do. I'd rather have the message and wifi, but my desired outcome is wifi and no message.
Any help greatly appreciated.