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Description of problem: When my system boots with the F15 kernel (kernel-2.6.38.6-27.fc15.x86_64) the display suffers from a 'black is green' problem, which isn't present when booted with the F14 kernel (kernel-2.6.35.12-90.fc14.x86_64). The problem shows up during boot at the moment when it switches into graphical mode (ie. it happens before X boots, during i915 kernel module initialization). System in question is a Shuttle SG33G5M Deluxe with an Intel built in graphics card. # lspci -nn 00:02.0 VGA compatible controller [0300]: Intel Corporation 82G33/G31 Express Integrated Graphics Controller [8086:29c2] (rev 02) The driver appears to be 'fbcon: inteldrmfb' and 'i915'. The greenness makes white-on-black text mode hard to use, and effectively makes X unusable (you can barely tell the colours apart) At a guess this is some sort of RGB vs CMYK vs YCbCr or byte ordering problem. All the pixels are at the right location, it's just their colours that are totally off. Perhaps relevant error messages: [drm] GMBUS timed out, falling back to bit banging on pin 0 [i915 gmbus disabled] ... [drm] GMBUS timed out, falling back to bit banging on pin 6 [i915 gmbus reserved] ... What sort of information can I provide to help debug this further? Thanks.
Still happens with 2.6.38.7-30.fc15.x86_64
Still happens with 2.6.38.8-31.fc15.x86_64
Please note that 2.6.36.2-12.rc1.fc15.x86_64 is OK. Please note that 2.6.37-2.fc15.x86_64 is *NOT* OK. This presumably means that this regression happened in 2.6.37.
2.6.37-0.rc5.git2.1.fc15.x86_64 <- busted (oops in i915 driver, never switches to graphics mode) 2.6.37-0.rc7.git0.1.fc15.x86_64 <- busted (oops in i915 driver, never switches to graphics mode) 2.6.37-1.fc15.x86_64 <- *NOT* ok
AFAICT, this breaks before X even starts to load. It breaks as soon as the kernel switches into graphics mode during boot (ie. when it switches to graphical frame buffer console by loading the i915 fb module, while it's still printing out the text boot messages [non quiet boot]). # cat /proc/cmdline ro root=LABEL=X:ROOT acpi_enforce_resources=lax SYSFONT=latarcyrheb-sun16 LANG=en_US.utf8 KEYTABLE=us As such I'm not convinced this should be classified to xorg-x11-drv-intel.
Still broken with kernel-2.6.40-4.fc15 from koji. But apparently no-one even looks here.
still broken with all kernels I've bothered to check from fc16
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