Messages in this thread | | | Date | Sat, 5 Feb 2005 10:35:50 +0100 | From | Pavel Machek <> | Subject | Re: [RFC] Reliable video POSTing on resume (was: Re: [ACPI] Samsung P35, S3, black screen (radeon)) |
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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.... 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 majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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