Messages in this thread | | | Date | Fri, 4 Feb 2005 12:38:21 -0500 | From | Jon Smirl <> | Subject | Re: [RFC] Reliable video POSTing on resume (was: Re: [ACPI] Samsung P35, S3, black screen (radeon)) |
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On Fri, 4 Feb 2005 08:44:54 +0100, Pavel Machek <pavel@ucw.cz> wrote: > 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.
-- Jon Smirl jonsmirl@gmail.com - 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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