Bug#426124: linux-image-2.6.21-1-powerpc: Radeon 9200+Apple Cinema Display: Switching to framebuffer turns off the display
Package: linux-image-2.6.21-1-powerpc
Version: 2.6.21-3
Severity: important
Hardware:
Apple Mac Mini with a Radeon 9200 graphics card:
[lspci]
0000:00:10.0 VGA compatible controller: ATI Technologies Inc RV280 [Radeon 9200] (rev 01) (prog-if 00 [VGA])
Subsystem: ATI Technologies Inc RV280 [Radeon 9200]
Flags: bus master, 66MHz, medium devsel, latency 255, IRQ 48
Memory at 98000000 (32-bit, prefetchable) [size=128M]
I/O ports at f0000400 [size=256]
Memory at 90000000 (32-bit, non-prefetchable) [size=64K]
Expansion ROM at f1000000 [disabled] [size=128K]
Capabilities: [58] AGP version 2.0
Capabilities: [50] Power Management version 2
Monitor: Apple Cinema Display 19", connected via DVI.
% cat /proc/cmdline
root=/dev/hda3 ro video=radeonfb:1680x1050-32@60
This also affects 2.6.20 as well as 2.6.21. 2.6.18 works just fine.
When the kernel switches the console to the framebuffer during boot, the
monitor immediately powers off (you see fbcon flash on for an instant as
the monitor turns off).
The monitor will not turn on again, even when X starts up.
This is possibly related to
http://lists.x.org/archives/xorg-driver-ati/2006-September/000029.html
(see BenH's comment about the I2C/DDC lines)
#389007 (I've not get found the cause for that, either).
I've put the severity as important, as the system is totally unusable
with the monitor powered down!
Regards,
Roger
-- Package-specific info:
-- System Information:
Debian Release: lenny/sid
APT prefers unstable
APT policy: (990, 'unstable')
Architecture: powerpc (ppc)
Kernel: Linux 2.6.18-3-powerpc
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages linux-image-2.6.21-1-powerpc depends on:
ii initramfs-tools [linux-initr 0.87b tools for generating an initramfs
ii mkvmlinuz 33 create a kernel to boot a PowerPC
ii module-init-tools 3.3-pre11-1 tools for managing Linux kernel mo
linux-image-2.6.21-1-powerpc recommends no packages.
-- debconf information:
linux-image-2.6.21-1-powerpc/preinst/lilo-has-ramdisk:
linux-image-2.6.21-1-powerpc/postinst/bootloader-error-2.6.21-1-powerpc:
linux-image-2.6.21-1-powerpc/preinst/overwriting-modules-2.6.21-1-powerpc: true
linux-image-2.6.21-1-powerpc/postinst/bootloader-test-error-2.6.21-1-powerpc:
linux-image-2.6.21-1-powerpc/preinst/initrd-2.6.21-1-powerpc:
linux-image-2.6.21-1-powerpc/preinst/failed-to-move-modules-2.6.21-1-powerpc:
linux-image-2.6.21-1-powerpc/preinst/abort-overwrite-2.6.21-1-powerpc:
linux-image-2.6.21-1-powerpc/preinst/already-running-this-2.6.21-1-powerpc:
linux-image-2.6.21-1-powerpc/postinst/old-initrd-link-2.6.21-1-powerpc: true
shared/kernel-image/really-run-bootloader: true
linux-image-2.6.21-1-powerpc/preinst/bootloader-initrd-2.6.21-1-powerpc: true
linux-image-2.6.21-1-powerpc/prerm/removing-running-kernel-2.6.21-1-powerpc: true
linux-image-2.6.21-1-powerpc/postinst/old-dir-initrd-link-2.6.21-1-powerpc: true
linux-image-2.6.21-1-powerpc/postinst/depmod-error-initrd-2.6.21-1-powerpc: false
linux-image-2.6.21-1-powerpc/postinst/old-system-map-link-2.6.21-1-powerpc: true
linux-image-2.6.21-1-powerpc/preinst/elilo-initrd-2.6.21-1-powerpc: true
linux-image-2.6.21-1-powerpc/preinst/abort-install-2.6.21-1-powerpc:
linux-image-2.6.21-1-powerpc/postinst/create-kimage-link-2.6.21-1-powerpc: true
linux-image-2.6.21-1-powerpc/preinst/lilo-initrd-2.6.21-1-powerpc: true
linux-image-2.6.21-1-powerpc/prerm/would-invalidate-boot-loader-2.6.21-1-powerpc: true
linux-image-2.6.21-1-powerpc/postinst/depmod-error-2.6.21-1-powerpc: false
linux-image-2.6.21-1-powerpc/postinst/kimage-is-a-directory:
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