Cameron Patrick <[EMAIL PROTECTED]> wrote: > What kind of userland support do you see as being missing? I use the > hibernate package for ACPI sleep and it works pretty well. Most of > the problems that I've seen with ACPI have been kernel or BIOS issues > (e.g. the screen not being switched on when resuming unless you give > particular kernel options).
The ACPI spec makes it the OS's responsibility to reinitialise the video hardware, not the BIOS's. The kernel is (for the most part) incapable of doing so - there are some cases where you can get it to bring it back, but there's a huge range of hardware where those options crash the machine on resume. The main things that need doing are: 1) Dealing with network interfaces and the like sensibly - at the moment, this will often require unloading and reloading modules pre/post suspend 2) Working with video state. The vbetool package makes it possible to save and restore the graphics card state from userland, which tends to work much better than the kernel fudges. In the long run, either X or the framebuffer drivers need to get much better at programming the video. 3) Decent integration into user configuration. In a lot of cases, you want PM policy to be definable by the person carrying the computer around, even if they don't have administrative access. I've got some amount of code for doing most of these things, but it's very heavily a post-Sarge thing - it involves touching a lot of packages. -- Matthew Garrett | [EMAIL PROTECTED] -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
