Comment 47 for bug 1038055

It really is the problem of remove_conflicting_framebuffers() returning before the removed fb's driver has released its resources. As it is visible below efifb seems to take quite a while (sometimes?).

[ 0.189597] efifb: probing for efifb
[ 0.189597] efifb: framebuffer region reserved
[ 0.189597] efifb: framebuffer at 0xfc000000, mapped to 0xffffc90000900000, using 1408k, total 1408k
[ 0.189597] efifb: mode is 800x600x24, linelength=2400, pages=1
[ 0.189597] efifb: scrolling: redraw
[ 0.189597] efifb: Truecolor: size=0:8:8:8, shift=0:16:8:0
[ 10.823896] fb: conflicting fb hw usage cirrusdrmfb vs EFI VGA - removing generic driver
[ 10.856476] cirrus: requestion framebuffer region
[ 10.856481] cirrus: failed to get framebuffer region
[ 11.361124] cirrus: failed to get framebuffer region
[ 11.864322] cirrus: failed to get framebuffer region
[ 12.368378] [drm:cirrus_vram_init] *ERROR* can't reserve VRAM
[ 12.368391] cirrus 0000:00:02.0: Fatal error during GPU init: -6
[ 13.934174] efifb: frambuffer region released