Control: reassign src:linux 4.5.4-1 Control: tag -1 help On Mon, 2016-05-30 at 18:42 +0200, Mathieu Malaterre wrote: > Package: linux-image-4.5.0-2-powerpc > Version: 4.5.4-1 > > During Debian installation the background color is inverted on PPC system. > At least on my Mac Mini G4, the default background color shows up as red > from begining to start (only the last screen turn blue). > > Looking at the module loaded during the installation I can see radeonfb, > which I suspect is the one responsible for handling of `/dev/fb0`. > > After installation I tried reproducing this color inversion without any > luck so far. > > It is non-trivial to `rmmod radeon`, so instead I used (and rebooted): > > $ cat /etc/modprobe.d/radeon.conf > blacklist radeon > > However upon reboot `/dev/fb0` is already setup. Of course, because there is no character-based display mode on Power Macs (in general). > But neither radeonfb nor > radeon module seems to be loaded (using lsmod) but lspci output is rather > confusing [*]. lspci lists all kernel modules that match a particular PCI device's ID, and separately whether any kernel driver is currently bound to the device. > I can also see: > > $ cat /proc/fb > 0 OFfb ATY,RockHo As I would expect, the generic Open Firmware framebuffer driver is behind /dev/fb0. If a hardware-specific driver is loaded, that will take over from it. > Playing with the virtual screen with a red and blue color and `fim`, all > images looks weird, I could not figure out if there was something special > to setup so that I can display a red or blue image in `fim`. > > Lastly, I can run `dmesg` and the color looks right (error messages are > displayed in red, timestamp in green). > > I'd like to keep this bug open until I find what is going on with this > color inversion on PPC/ATI. [...] I'm sorry, but no-one is likely to help with this. The Linux port to Power Macs is no longer actively developed and no-one on the Debian kernel team looks after them. Ben. -- Ben Hutchings Absolutum obsoletum. (If it works, it's out of date.) - Stafford Beer
Attachment:
signature.asc
Description: This is a digitally signed message part