I would like to know wether suspend to RAM using acpi works for if you're using FC5 on a laptop.
I'm particularly interested by the answer if you happen to own an IBM thinkpad T20,T21 or T22.
Here's what I'm observing on either kernel 2.6.15-1.2054_FC5
(default for FC5) or 2.6.17-1.2145_FC5 (updated)
echo -n mem > /sys/power/state
The "moon crescent LED" will turn green and disk will spin down -> everything seems OK
When hitting a key the laptop APPARENTLY returns from suspend but
. the "moon crescent LED" stays blinking
. the command "echo -n mem > /sys/power/state" does not exit (the terminal either xterm.. or a virtual console) in which I typed the command is frozen.
.) the pb is present even if X11 is not started
.) I can't not run "echo -n mem > /sys/power/state" twice. A following attempt will provoke a message of the form "file locked by another process" (I don't remember exactly the phrasing and don't want to freeze my laptop again
.) sometimes the laptop is totally frozen, need to remove the power chord and the battery to restart it.
+ there seems to be some state in gdm, since a normal boot which should normally end up in the gdm greeting screen ends up in a black screen with no answer from the keyboard (even though the first "rhgb" part of boot was OK. Only remedy: start in runlevel 3 run xinit /usr/bin/xterm which
seems to clean this "gdm state"
I must add that suspend to RAM works with apm
. booting with kernel arguments
Here's is the output of lspci if that gives more clues:
00:00.0 Host bridge: Intel Corporation 440BX/ZX/DX - 82443BX/ZX/DX Host bridge (rev 03)
00:01.0 PCI bridge: Intel Corporation 440BX/ZX/DX - 82443BX/ZX/DX AGP bridge (rev 03)
00:02.0 CardBus bridge: Texas Instruments PCI1450 (rev 03)
00:02.1 CardBus bridge: Texas Instruments PCI1450 (rev 03)
00:03.0 Ethernet controller: Intel Corporation 82557/8/9 [Ethernet Pro 100] (rev 0c)
00:03.1 Serial controller: Agere Systems LT WinModem (rev 01)
00:05.0 Multimedia audio controller: Cirrus Logic CS 4614/22/24 [CrystalClear SoundFusion Audio Accelerator] (rev 01)
00:07.0 Bridge: Intel Corporation 82371AB/EB/MB PIIX4 ISA (rev 02)
00:07.1 IDE interface: Intel Corporation 82371AB/EB/MB PIIX4 IDE (rev 01)
00:07.2 USB Controller: Intel Corporation 82371AB/EB/MB PIIX4 USB (rev 01)
00:07.3 Bridge: Intel Corporation 82371AB/EB/MB PIIX4 ACPI (rev 03)
01:00.0 VGA compatible controller: S3 Inc. 86C270-294 Savage/IX-MV (rev 13)