This updates documentation for suspend-to-disk and RAM. In particular
modular disk drivers trap is documented.
Signed-off-by: Pavel Machek <[email protected]>
--- a/Documentation/power/swsusp.txt
+++ b/Documentation/power/swsusp.txt
@@ -27,13 +27,11 @@ echo shutdown > /sys/power/disk; echo di
echo platform > /sys/power/disk; echo disk > /sys/power/state
-
-Encrypted suspend image:
-------------------------
-If you want to store your suspend image encrypted with a temporary
-key to prevent data gathering after resume you must compile
-crypto and the aes algorithm into the kernel - modules won't work
-as they cannot be loaded at resume time.
+. If you have SATA disks, you'll need recent kernels with SATA suspend
+support. For suspend and resume to work, make sure your disk drivers
+are built into kernel -- not modules. [There's way to make
+suspend/resume with modular disk drivers, see FAQ, but you should
+better not do that.]
Article about goals and implementation of Software Suspend for Linux
@@ -328,4 +326,10 @@ init=/bin/bash, then swapon and starting
usually does the trick. Then it is good idea to try with latest
vanilla kernel.
+Q: How can distributions ship a swsusp-supporting kernel with modular
+disk drivers (especially SATA)?
+A: Well, it can be done, load the drivers, then do echo into
+/sys/power/disk/resume file from initrd. Be sure not to mount
+anything, not even read-only mount, or you are going to lose your
+data.
diff --git a/Documentation/power/video.txt b/Documentation/power/video.txt
--- a/Documentation/power/video.txt
+++ b/Documentation/power/video.txt
@@ -104,6 +104,7 @@ HP NX7000 ??? (*)
HP Pavilion ZD7000 vbetool post needed, need open-source nv driver for X
HP Omnibook XE3 athlon version none (1)
HP Omnibook XE3GC none (1), video is S3 Savage/IX-MV
+HP Omnibook 5150 none (1), (S1 also works OK)
IBM TP T20, model 2647-44G none (1), video is S3 Inc. 86C270-294 Savage/IX-MV, vesafb gets "interesting" but X work.
IBM TP A31 / Type 2652-M5G s3_mode (3) [works ok with BIOS 1.04 2002-08-23, but not at all with BIOS 1.11 2004-11-05 :-(]
IBM TP R32 / Type 2658-MMG none (1)
@@ -122,16 +123,21 @@ 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)
+IBM TP 600e none(1), but a switch to console and back to X is needed
Medion MD4220 ??? (*)
Samsung P35 vbetool needed (6)
-Sharp PC-AR10 (ATI rage) none (1)
+Sharp PC-AR10 (ATI rage) none (1), backlight does not switch off
Sony Vaio PCG-C1VRX/K s3_bios (2)
Sony Vaio PCG-F403 ??? (*)
Sony Vaio PCG-N505SN ??? (*)
+Sony Vaio PCG-GRT995MP none (1), works with 'nv' X driver
Sony Vaio vgn-s260 X or boot-radeon can init it (5)
+Sony Vaio vgn-S580BH vga=normal, but suspend from X. Console will be blank unless you return to X.
+Sony Vaio vgn-FS115B s3_bios (2),s3_mode (4)
Toshiba Libretto L5 none (1)
-Toshiba Satellite 4030CDT s3_mode (3)
-Toshiba Satellite 4080XCDT s3_mode (3)
+Toshiba Portege 3020CT s3_mode (3)
+Toshiba Satellite 4030CDT s3_mode (3) (S1 also works OK)
+Toshiba Satellite 4080XCDT s3_mode (3) (S1 also works OK)
Toshiba Satellite 4090XCDT ??? (*)
Toshiba Satellite P10-554 s3_bios,s3_mode (4)(****)
Toshiba M30 (2) xor X with nvidia driver using internal AGP
diff --git a/kernel/power/process.c b/kernel/power/process.c
--- a/kernel/power/process.c
+++ b/kernel/power/process.c
@@ -83,7 +83,7 @@ int freeze_processes(void)
yield(); /* Yield is okay here */
if (todo && time_after(jiffies, start_time + TIMEOUT)) {
printk( "\n" );
- printk(KERN_ERR " stopping tasks failed (%d tasks remaining)\n", todo );
+ printk(KERN_ERR " stopping tasks timed out (%d tasks remaining)\n", todo );
break;
}
} while(todo);
diff --git a/kernel/power/swsusp.c b/kernel/power/swsusp.c
--- a/kernel/power/swsusp.c
+++ b/kernel/power/swsusp.c
@@ -967,7 +967,7 @@ int swsusp_check(void)
if (!error)
pr_debug("swsusp: resume file found\n");
else
- pr_debug("swsusp: Error %d check for resume file\n", error);
+ pr_debug("swsusp: Error %d checking for resume file\n", error);
return error;
}
--
Boycott Kodak -- for their patent abuse against Java.
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