From: Pallipadi, V. <ven...@in...> - 2004-10-21 23:11:55
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>-----Original Message----- >From: Pavel Machek [mailto:pa...@uc...]=20 >Sent: Thursday, October 21, 2004 4:00 PM >To: Pallipadi, Venkatesh >Cc: Kendall Bennett; lin...@vg...;=20 >lin...@li... >Subject: Re: [Linux-fbdev-devel] Re: Generic VESA framebuffer=20 >driver and Video card BOOT? > >Hi! > >> >The rest of the code you have above seems superfluous to me=20 >as we have=20 >> >never needed to do that. Then again we boot the card using the BIOS=20 >> >emulator, which is different because it runs within a=20 >> >protected machine=20 >> >state. >> > >> >Have you taken a look at the X.org code? They have code in=20 >> >there to POST=20 >> >the video card also (either using vm86() or the BIOS emulator). >> > >>=20 >> I have done some experiments with this video post stuff. >> I think this should be done using x86 emulator rather than doing=20 >> in real mode. The reason being, with an userlevel emulator=20 >we can call >> it at different times during resume. The current real mode videopost >> does=20 > >Actually Ole Rohne has patch that allows you to call real mode any >time you want. > Pavel Yes. I tried Ole's patch. That helped on one of my laptops. But, on=20 the other one it doesn't work. It goes into real mode but never returns. Both systems had Radeom 9000M cards, but one with older version of the=20 firmware (didn't work) and one with newer version. IIRC, even Stefan had similar problems with Ole's patch. Thanks, Venki |