Hi! > > > > We already try to do that, but it hangs on 70% of machines. See > > > > Documentation/power/video.txt. > > > > > > We know that all of these ROMs are run at power on so they have to > > > work. This implies that there must be something wrong with the > > > environment the ROM are being run in. Video ROMs make calls into the > > > INT vectors of the system BIOS. If these haven't been set up yet > > > running the VBIOS is sure to hang. Has someone with ROM source and > > > the appropriate debugging tools tried to debug one of these hangs? > > > Alternatively code could be added to wakeup.S to try and set these up > > > or dump the ones that are there and see if they are sane. > > > > Rumors say that notebooks no longer have video bios at C000h:0; rumors > > say that video BIOS on notebooks is simply integrated into main system > > BIOS. I personaly do not know if rumors are true, but PCs are ugly > > machines.... > > The state of current hardware has already been mentioned but let > me clarify. This is not a laptop problem anytime you have onboard > video you are unlikely to have a separate video ROM. This includes > many recent server boards as well as laptops. When the board boots > up there will be a video option ROM shadowed into the usually location > at C000h:0 but what becomes of it afterwards is a good question. > > For server boards most commonly this seems to be a flavor of the ATI > Rage XL chip. It is a low end part that I doubt getting documentation > for will be very hard. And according to > Documentation/power/video.txt this is one of the cases that actually > works.
I do not see Rage XL mentioned in video.txt; can you give me details and/or suggest a patch? > What is happening in those POST routines of a video card is typically > the code to initialize the memory controller on the video card. Plus > a little bit of code to set the video mode. If I read the > documentation correctly in a S3 power state only the RAM is preserved. > So it does look like the video post is needed. On some machines, video state is preserved over S3... Some BIOSes are good enough to POST video for you... Pavel -- People were complaining that M$ turns users into beta-testers... ...jr ghea gurz vagb qrirybcref, naq gurl frrz gb yvxr vg gung jnl! - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/