The patch titled
swsusp: documentation updates
has been added to the -mm tree. Its filename is
swsusp-documentation-updates.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
From: Pavel Machek <pavel@xxxxxx>
Update documentation a bit, add more machines to video.txt list.
Signed-off-by: Pavel Machek <pavel@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
Documentation/power/swsusp.txt | 43 +++++++++++++++++++++++++++++--
Documentation/power/video.txt | 4 ++
2 files changed, 45 insertions(+), 2 deletions(-)
diff -puN Documentation/power/swsusp.txt~swsusp-documentation-updates Documentation/power/swsusp.txt
--- devel/Documentation/power/swsusp.txt~swsusp-documentation-updates 2006-05-12 11:29:28.000000000 -0700
+++ devel-akpm/Documentation/power/swsusp.txt 2006-05-12 11:29:28.000000000 -0700
@@ -349,9 +349,34 @@ Q: How do I make suspend more verbose?
A: If you want to see any non-error kernel messages on the virtual
terminal the kernel switches to during suspend, you have to set the
-kernel console loglevel to at least 5, for example by doing
+kernel console loglevel to at least 4 (KERN_WARNING), for example by
+doing
- echo 5 > /proc/sys/kernel/printk
+ # save the old loglevel
+ read LOGLEVEL DUMMY < /proc/sys/kernel/printk
+ # set the loglevel so we see the progress bar.
+ # if the level is higher than needed, we leave it alone.
+ if [ $LOGLEVEL -lt 5 ]; then
+ echo 5 > /proc/sys/kernel/printk
+ fi
+
+ IMG_SZ=0
+ read IMG_SZ < /sys/power/image_size
+ echo -n disk > /sys/power/state
+ RET=$?
+ #
+ # the logic here is:
+ # if image_size > 0 (without kernel support, IMG_SZ will be zero),
+ # then try again with image_size set to zero.
+ if [ $RET -ne 0 -a $IMG_SZ -ne 0 ]; then # try again with minimal image size
+ echo 0 > /sys/power/image_size
+ echo -n disk > /sys/power/state
+ RET=$?
+ fi
+
+ # restore previous loglevel
+ echo $LOGLEVEL > /proc/sys/kernel/printk
+ exit $RET
Q: Is this true that if I have a mounted filesystem on a USB device and
I suspend to disk, I can lose data unless the filesystem has been mounted
@@ -371,3 +396,17 @@ mounted filesystem. With USB that's tru
The safest thing is to unmount all USB-based filesystems before suspending
and remount them after resuming.
+Q: I upgraded the kernel from 2.6.15 to 2.6.16. Both kernels were
+compiled with the similar configuration files. Anyway I found that
+suspend to disk (and resume) is much slower on 2.6.16 compared to
+2.6.15. Any idea for why that might happen or how can I speed it up?
+
+A: This is because the size of the suspend image is now greater than
+for 2.6.15 (by saving more data we can get more responsive system
+after resume).
+
+There's the /sys/power/image_size knob that controls the size of the
+image. If you set it to 0 (eg. by echo 0 > /sys/power/image_size as
+root), the 2.6.15 behavior should be restored. If it is still too
+slow, take a look at suspend.sf.net -- userland suspend is faster and
+supports LZF compression to speed it up further.
diff -puN Documentation/power/video.txt~swsusp-documentation-updates Documentation/power/video.txt
--- devel/Documentation/power/video.txt~swsusp-documentation-updates 2006-05-12 11:29:28.000000000 -0700
+++ devel-akpm/Documentation/power/video.txt 2006-05-12 11:29:28.000000000 -0700
@@ -90,6 +90,7 @@ 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 230 s3_bios (2)
Acer TM 242FX 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)
@@ -115,6 +116,7 @@ Dell D610 vga=normal and X (possibly v
Dell Inspiron 4000 ??? (*)
Dell Inspiron 500m ??? (*)
Dell Inspiron 510m ???
+Dell Inspiron 5150 vbetool needed (6)
Dell Inspiron 600m ??? (*)
Dell Inspiron 8200 ??? (*)
Dell Inspiron 8500 ??? (*)
@@ -125,6 +127,7 @@ 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 XE3L-GF vbetool (6)
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 :-(]
@@ -157,6 +160,7 @@ Sony Vaio vgn-s260 X or boot-radeon can
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 Libretto 100CT/110CT vbetool (6)
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)
_
Patches currently in -mm which might be from pavel@xxxxxx are
origin.patch
git-acpi.patch
fix-sco-on-some-bluetooth-adapters-2.patch
swsusp-add-architecture-special-saveable-pages-support.patch
swsusp-add-architecture-special-saveable-pages-fix.patch
swsusp-i386-mark-special-saveable-unsaveable-pages.patch
swsusp-i386-mark-special-saveable-unsaveable-pages-fix.patch
swsusp-x86_64-mark-special-saveable-unsaveable-pages.patch
swsusp-x86_64-mark-special-saveable-unsaveable-pages-fix.patch
swsusp-take-lowmem-reserves-into-account.patch
kernel-power-snapshotc-cleanups.patch
dont-use-flush_tlb_all-in-suspend-time.patch
dont-use-flush_tlb_all-in-suspend-time-tidy.patch
swsusp-documentation-updates.patch
backlight-locomo-backlight-driver-updates.patch
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