I have had KMS working on my PowerBook and iBook G4 machines. This is the first time those kernel boot options have not worked.
Sent from my iPhone > On May 20, 2015, at 2:55 AM, Rick Thomas <[email protected]> wrote: > > Hi Herminio, > > I gather you’re hoping for video acceleration via KMS? > > If not, you can use boot parameters > nomodeset vga=0x31B > > This gives un-accelerated graphics, but at least it doesn’t freeze (on my > machine) or give scrambled colors. The default jessie amd64 install either > gives scrambled colors or freezes randomly. The vga=0x31b parameter sets the > video resolution, in this case it’s 1280x1024, 24-bits. > > See > http://en.wikipedia.org/wiki/VESA_BIOS_Extensions#Linux_video_mode_numbers > for a chart of resolution options that may be used. > > The web page also suggests the “hwinfo —framebuffer” command. You’ll need to > install the “hwinfo” package — it’s available in Debian, but it seems to only > work on x86/amd64 hardware. I tried it on a powerpc64 machine and it gave > me lots of error messages and no useful output. > > For powerpc hardware, there’s the “fbset” command (also available as a > separate package in Debian). > > I’ve seen hints that the “vga=“ boot-option may not be supported on > non-x86/amd64 hardware, but it’s certainly worth a try! And I can vouch from > personal experience that the “nomodeset” option is supported, and works, on > powerpc/powerc64. > > My graphics card (on the amd64 machine) is > 09:02.0 VGA compatible controller: NVIDIA Corporation NV44A [GeForce 6200] > (rev a1) > > On the powerpc64 machine, it’s > 0000:0b:00.0 VGA compatible controller: NVIDIA Corporation NV43 [GeForce > 6600 LE] (rev a2) > > Hope that helps! > Enjoy! > Rick > >> On May 19, 2015, at 11:11 PM, Herminio Hernandez Jr >> <[email protected]> wrote: >> >> On a Powermac G4 when I use these parameters >> radeon.agpmode=-1 >> radeon.modeset=1 radeon.agpmode=-1 >> radeon.modeset=1 video=offb:off radeon.agpmode=-1 >> >> KMS does not load fbdev does and my colors are all off. However if I do >> this >> >> radeon.modeset=1 video=offb:off video=radeonfb:off radeon.agpmode=-1 >> >> then I get the right colors but the screen freezes. I am betting it is >> due to the really old card I have. I am planning replacing it with a >> better one, but I was wonder has anyone found a work around. Thanks! >> >> >> -- >> To UNSUBSCRIBE, email to [email protected] >> with a subject of "unsubscribe". Trouble? Contact [email protected] >> Archive: https://lists.debian.org/[email protected] > -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected] Archive: https://lists.debian.org/[email protected]
