POSTing bios works. Ole Rohne has patch to do just that at
http://dev.gentoo.org/~marineam/patch-radeonfb-2.6.11-rc2-mm2.
+(8) on some systems, you can use the video_post utility mentioned here:
+ http://bugzilla.kernel.org/show_bug.cgi?id=3670. Do echo 3 > /sys/power/state
+ && /usr/sbin/video_post - which will initialize the display in console mode.
+ If you are in X, you can switch to a virtual terminal and back to X using
+ CTRL+ALT+F1 - CTRL+ALT+F7 to get the display working in graphical mode again.
+
Now, if you pass acpi_sleep=something, and it does not work with your
bios, you'll get a hard crash during resume. Be careful. Also it is
safest to do your experiments with plain old VGA console. The vesafb
------------------------------------------------------------------------------
Acer Aspire 1406LC ole's late BIOS init (7), turn off DRI
Acer TM 242FX vbetool (6)
-Acer TM C300 vga=normal (only suspend on console, not in X), vbetool (6)
+Acer TM C110 video_post (8)
+Acer TM C300 vga=normal (only suspend on console, not in X), vbetool (6) or video_post (8)
Acer TM 4052LCi s3_bios (2)
Acer TM 636Lci s3_bios vga=normal (2)
Acer TM 650 (Radeon M7) vga=normal plus boot-radeon (5) gets text console back
Compaq Evo N620c vga=normal, s3_bios (2)
Dell 600m, ATI R250 Lf none (1), but needs xorg-x11-6.8.1.902-1
Dell D600, ATI RV250 vga=normal and X, or try vbestate (6)
+Dell D610 vga=normal and X (possibly vbestate (6) too, but not tested)
Dell Inspiron 4000 ??? (*)
Dell Inspiron 500m ??? (*)
+Dell Inspiron 510m ???
Dell Inspiron 600m ??? (*)
Dell Inspiron 8200 ??? (*)
Dell Inspiron 8500 ??? (*)
Medion MD4220 ??? (*)
Samsung P35 vbetool needed (6)
Sharp PC-AR10 (ATI rage) none (1)
+Sony Vaio PCG-C1VRX/K s3_bios (2)
Sony Vaio PCG-F403 ??? (*)
Sony Vaio PCG-N505SN ??? (*)
Sony Vaio vgn-s260 X or boot-radeon can init it (5)
Toshiba Satellite 4080XCDT s3_mode (3)
Toshiba Satellite 4090XCDT ??? (*)
Toshiba Satellite P10-554 s3_bios,s3_mode (4)(****)
+Toshiba M30 (2) xor X with nvidia driver using internal AGP
Uniwill 244IIO ??? (*)