I offer advance apologies for the long post. I have a Dell Inspiron 2600 which I'm trying to get ACPI S3 and S4 suspend modes working on. I've made some progress with S3, so I thought I'd post a summary. First off, without any tweaking running 'echo -n "mem" > /sys/power/state' puts the machine into suspend. Hitting the power button wakes and it resumes without any display. This laptop uses the Intel i830M graphics chipset, and it needs to POST to bring back the display. There is an apt repo at http://www.srcf.ucam.org/~mjg59/laptops/ with an application called video_post written by someone at Intel. I grabbed the source, compiled it, and put the video_post binary in /sbin. I also added a driver option to my xorg.conf for the i810 driver: "VBERestore" "true". Now comes the meat of getting this going. For some reason, there are no events or scripts in /etc/acpi. I copied over some stuff from Ubuntu (which is where I found the above apt repo with ACPI suspend dpkg packages). Before worrying about hooking up events with actions, I just wanted to get a script written to do the suspend. Since I intend on getting both S3 and S4, I get the prepare.sh, suspend.sh/hibernate.sh, resume.sh split that the Ubuntu stuff has. My prepare.sh stops acpid (don't know why, Ubuntu stuff had it), loops to ifdown interfaces (currently just eth1), loops to unload modules (button and uhci_hcd), calls fgconsole to remember what console we're on, and then calls 'chvt 12' to avoid problems during resume, in case we're on an X console. The suspend.sh script simply calls prepare.sh, 'echo -n "mem" > /sys/power/state', and resume.sh. The resume.sh script calls video_post, loads the modules unloaded in prepare, runs ifup on the interfaces ifdowned in prepare.sh, calls 'hwclock --hctosys' to reset the time, calls chvt to return to what fgconsole returned in prepare.sh, and starts acpid. The good thing is that the display is being restored perfectly. The bad thing is that my usb mouse dies (loading uhci_hcd should have fixed that) and all the IP routing table is nuked so I have no network connectivity afterward. I tried stopping the PCMCIA service in prepare.sh and starting it in resume.sh to fix the network problem (pcmcia wifi nic w\ prism chip using orinoco_cs driver) but that didn't help. -- ; Justin Georgeson ; "Free the mallocs, delete the news" ; http://www.openoffice.org ; http://www.boycott-riaa.com
