#1 i915 support patch

[Jo "directhex" Shields]

I have successfully patched i855crt to function on
recent i915 graphics controllers (specifically, a Dell
Latitude D410).

This patch also makes for some minor cleanups,
including a speling error, and mistaken use of ; rather
than || in a block if statement.

Mode support with the i915 appears to be uncooperative,
I was only able to get a stable (but very solid) image
with 1024x768@70 on a Belinea 17" TFT

[Jo "directhex" Shields]

i915 support patch

[Anonymous]

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Hi

On my thinkpad x41 (i915GM), if I enable the video port
using the patched i855crt I get a picture with very
messed-up colors. If I first initialize the port using the
built-in video switch (Fn-F5 or echo video_switch >
/proc/acpi/ibm/video), switching with i855crt works
perfectly well afterwards. It seems something is not
correctly initialized there.

[lik]

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I also have the same problem of stefan_ott using my Sony
vaio VGN-FS550 with an i915GM chipset.
If i link a CRT monitor and type
> ./i855crt on 1024x768@70
on the crt screen, i get an image moved on the left by about
200 px and with very wrong colors.

if i
> ./i855crt on rawpipe
i get correct colors but lines move strangely making the
image unclear

[Nobody/Anonymous]

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Hm, I'd love to poke this further, but

1) WorksForMe (tm)
2) I don't really understand the code, I just tried a
trivial little patch to force it onto my Dell, and it
happened to work.

It'd be nice if this were still in development, but the CVS
has gone a little stale

[Dino E. Risso]

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I try the patched i855crt in my Sony Vaio VGN-TX650FP.
The resolution in the LCD is 1366x768@70hz (widescreen).
When I switch on the CRT I obtain correct colors but lines
that move strangely making the image unclear similar to
reported by
"lik"

However if first I switch the resolution to 1024x768@71hz
using the comand "xrandr" and next switch on the CRT, I
obtain correct colors and correct image, except for: (1) a
small
square block at left-top of the CRT with some garbage. (2)
The 1/5 right size portion of the image is out of display in
both LCD and CRT.

[Dino E. Risso]

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I modify the /etc/X11/XF86Config-4
to set 1024x768 instead of 1377x768 reported below, next
I switch on the CRT (with patched command: i855crt on
1024x768@70). Now the CRT display contains exactly all the
image, with the correct colors. Still the small garbage
block (about 1/10 x 1/10) at left top remains.

Any suggestion?

[Dino E. Risso]

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Finally the small left-top block garbage dissapears if
I use the command:

i855crt swcursor on 1024x768@70

[Johan]

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Could someone please post a short howto for this? I don't know how to use .diff files. Thanks!

[Anonymous]

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Hi!

To use this diff file, enter the unpacked source directory, then type

patch -p1 < /path/to/the/diff/file

For details on how to use patch, see http://www.linuxmanpages.com/man1/patch.1.php

[Johan]

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Hi again!

Patching seemed to work:
patch -p1 < ../i855-crt-i915support.diff
patching file dumpreg.c
patching file i855crt.c
patching file i855crt.h

But not the compiling:
make
gcc -c i855crt.c
i855crt.c:22:22: error: X11/Xlib.h: The file or catalog does not exist
i855crt.c:23:23: error: X11/Xutil.h: The file or catalog does not exist
i855crt.c:24:28: error: X11/cursorfont.h: The file or catalog does not exist
i855crt.c:25:31: error: X11/extensions/Xv.h: The file or catalog does not exist
i855crt.c:26:34: error: X11/extensions/Xvlib.h: The file or catalog does not exist
i855crt.c: In function ‘overlay_select_pipe’:
i855crt.c:40: error: ‘Atom’ undeclared (first use in this function)
i855crt.c:40: error: (Each undeclared identifier is reported only once
i855crt.c:40: error: for each function it appears in.)
i855crt.c:40: error: expected ‘;’ before ‘AtomPipe’
i855crt.c:41: error: ‘XvAdaptorInfo’ undeclared (first use in this function)
i855crt.c:41: error: ‘info’ undeclared (first use in this function)
i855crt.c:42: error: ‘XvAttribute’ undeclared (first use in this function)
i855crt.c:42: error: ‘xvattr’ undeclared (first use in this function)
i855crt.c:43: error: ‘Display’ undeclared (first use in this function)
i855crt.c:43: error: ‘d’ undeclared (first use in this function)
i855crt.c:48: error: ‘AtomPipe’ undeclared (first use in this function)
i855crt.c:48: error: ‘False’ undeclared (first use in this function)
i855crt.c:51: error: ‘Success’ undeclared (first use in this function)
make: *** [i855crt.o] Error 1

[noamik]

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@re-jeep:
Install libxv-dev to get the needed header files. i855crt will than compile.

[noamik]

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Sry for double comment. More information here:
https://bugs.launchpad.net/ubuntu/+source/libxv/+bug/18898