driver -- vesafb and vgacon are widely used).
This is not problem for swsusp, because during swsusp resume, BIOS is
-run normally so video card is normally initialized. S3 has absolutely
-no chance of working with SMP/HT. Be sure it to turn it off before
-testing (swsusp should work ok, OTOH).
+run normally so video card is normally initialized. It should not be
+problem for S1 standby, because hardware should retain its state over
+that.
There are a few types of systems where video works after S3 resume:
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
(proper X, knowing your hardware, not XF68_FBcon) might have better
chance of working.
-Table of known working systems:
+Table of known working notebooks:
Model hack (or "how to do it")
------------------------------------------------------------------------------
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 636Lci s3_bios,s3_mode (4)
Acer TM 650 (Radeon M7) vga=normal plus boot-radeon (5) gets text console back
Acer TM 660 ??? (*)
Acer TM 800 vga=normal, X patches, see webpage (5) or vbetool (6)
IBM TP X20 ??? (*)
IBM TP X30 s3_bios (2)
IBM TP X31 / Type 2672-XXH none (1), use radeontool (http://fdd.com/software/radeon/) to turn off backlight.
+IBM TP X32 none (1), but backlight is on and video is trashed after long suspend
IBM Thinkpad X40 Type 2371-7JG s3_bios,s3_mode (4)
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 M30 (2) xor X with nvidia driver using internal AGP
Uniwill 244IIO ??? (*)
+Known working desktop systems
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Mainboard Graphics card hack (or "how to do it")
+------------------------------------------------------------------------------
+Asus A7V8X nVidia RIVA TNT2 model 64 s3_bios,s3_mode (4)
+
(*) from http://www.ubuntulinux.org/wiki/HoaryPMResults, not sure
which options to use. If you know, please tell me.
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff