Hello
Since Linux 2.6.36 the digital output on my system (855GME + DVI-I) is
not working any longer. The analog output is always activated regardless
of the type of monitor attached.
The culprit seems to be intel_crt_detect_ddc(), which returns true as
soon as an ACK from the EDID device is
Hello
Changelog:
Use VBT information to determine which DDC bus to use for CRTDCC.
Fall back to GPIOA if VBT info is not available.
Reviewed-by: Jesse Barnes jbar...@virtuousgeek.org
Signed-off-by: David Müller d.muel...@elsoft.ch
diff -dpurN
Jesse Barnes wrote:
Wanna respin it with that change (just remove the IS_85X change and add
a return below the crtc_ddc_bus = -1 if the structure size doesn't match
the block size).
I'm not sure if i fully understood what you are trying to tell me but
have you imagined something like this?
Hello
Any news regarding this issue?
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Hello
What about a patch like the attached one; would this be acceptable?
Signed-off-by: David Müller d.muel...@elsoft.ch
diff -dpruN linux-2.6.31-rc2.orig/drivers/gpu/drm/i915/i915_drv.h
linux-2.6.31-rc2.patched/drivers/gpu/drm/i915/i915_drv.h
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Eric Anholt wrote:
There have been bugfixes in load detect since .30, could you try
master and see if it's fixed?
Yes, you are right. Problem seems to me fixed in 2.6.31-rc1.
Thanks for the hint
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Ma, Ling wrote:
We have one DG45ID board connected VGA by DVI-I port, however
bmp_CRT_DDC_Pins from vbt is always 0x02 which means GPIOA, so we can
not depend on the value, and have to try GPIOD or GPIOE. It only
impact G4X series platform.
So if i understand you correctly, the
Ma, Ling wrote:
What about 855GM or 945GME platforms? Can the crt_ddc_gmbus_pin field
use on these platforms?
On those platforms they always use GPIOA, at least we don't find similar bugs.
If you have some related bugs, could you please tell us?
There are (at least) two boards on this planet
Hello
While testing Linux kernel 2.6.30 on a Intel 855GME platform i noticed a
3 minute delay during the Linux boot process in the case DDC support is
not available.
I've tracked the problem down to the following lines in
driver/gpu/drm/i915/intel_crt.c:
289 /*
290
