just wanted to confirm, that rebuilding with the mentioned mesa-dri
patch applied, seems to work fine on my DG35EC mainboard with integrated
(multihead capable) G35 graphics controller and screen sizes larger than
2048x2048 :-)
00:02.0 VGA compatible controller: Intel Corporation 82G35 Express
So my question is regaurding the 945gm chipset. Does the hardware
support 2048 and if so are there patches, fixes planned to get it
working??
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it works on a GM965/GL960 (00:02) with ubuntu 8.10 + the mesa patch
above (comment 15) without any issues on my side.
I created a deb for libgl1-mesa-dri_7.2-1ubuntu2_i386 from source and added the
patch.
The limit is now 4096x4096 where it was 2048x2048 before.
If you need help how to do that
Marius, thanks for reporting it upstream. We'll await their response.
I know there is tons and tons of work going on upstream related to this,
and to performance with EXA. I know this is a top priority for them and
so will get solved in hopefully good time. Likely, we don't want to get
too
After applying the fix above, I get graphics problems and extreme
slowness when using any 3D program. I think it's very good to hold off
for now!
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Mika's comment (#16) has a broken link. Here's the currently working
link to Keith Packard's email that originated the mesa patch in
question:
http://lists.freedesktop.org/archives/xorg/2008-April/034707.html
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** Bug watch added: freedesktop.org Bugzilla #18100
https://bugs.freedesktop.org/show_bug.cgi?id=18100
** Also affects: mesa via
https://bugs.freedesktop.org/show_bug.cgi?id=18100
Importance: Unknown
Status: Unknown
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** Changed in: mesa
Status: Unknown = Confirmed
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Alexander, my i965 box (running pre-release Intrepid) doesn't appear to
have these patches, else I'd hope it would work!
[EMAIL PROTECTED]:~$ lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation 82Q963/Q965 Integrated
Graphics Controller (rev 02)
[EMAIL PROTECTED]:~$ glxinfo -l
Yeah, mesa-7.2 did not include this. However, I'm uncomfortable
including it without understanding it's potential consequences better.
I think we should forward this upstream for comment, and try it for
jaunty.
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Alberto, my understanding was that chips 965 and above should be able to
do more than 2048, provided the necessary patches are applied to video-
intel and mesa. Is Intrepid lacking those patches then?
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You
hyperair: your limit is 2048 then. This means that DRI will be disabled
if you set the framebuffer size to something higher or wider than 2048.
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I'm using Intrepid on a Lenovo Y410 (Intel GM965 GPU), but glxinfo -l |
grep GL_MAX_TEXTURE_SIZE shows 2048. What's with that?
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What's the status on that? I see Intrepid carries Mesa 7.2, but as far
as I see, the file brw_context.c (upstream) is still as it used to be.
Does this set the limit to 2048 or 4096?
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Alexander: Mesa is limited to 4096 pixels, however your hardware might
not support 4096.
What's the output of this commad?
glxinfo -l | grep GL_MAX_TEXTURE_SIZE
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** Changed in: mesa (Ubuntu)
Sourcepackagename: xserver-xorg-video-intel = mesa
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Mesa 7.1 has now been released. I'm not sure whether the patch has gone
in or not.
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I just looked at the sources: Mesa 7.1 does not have the patch to
src/mesa/drivers/dri/i965/brw_context.c applied.
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Thanks, we've got the newer -intel in Intrepid with this, but it looks
like the patch isn't in mesa-7.1~rc3. If it's not included in the final
release we should consider carrying it as a Ubuntu patch.
** Changed in: xserver-xorg-video-intel (Ubuntu)
Importance: Wishlist = High
Assignee:
My laptop has a i945GM chipset. I understand the hardware limit leading
to no DRI with width or height 2048, but I still don't understand why
things got worse when I upgraded to Ubuntu 8.04 from 7.10. What
magic do I have to put in xorg.conf to get, e.g., firefox scrolling to
be decent again?
Nothing like posting a question in a public forum to get you to find the
(obvious) answer yourself. In xorg.conf, I replaced
Option AccelMethod exa
with
Option AccelMethod xaa
and now everything is speedy again. I'm not clear on what I'm losing
by doing this, but I don't do
Thanks, that fixes it.
The compiz bug looks like #218000
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When applying the fixes on a 965 laptop (HP 6710b), I get graphical
errors when trying dual head mode. There are parts of the screen that
don't update, and sometimes when I change from --left-of to --right-of
for example, the screens can get scrambled in bad ways. If you want me
to try to explain
Kieran: Compiz sometimes gets very confused after an xrandr change.
Alt-F2 compiz --replace usually fixes the problem. It's a different
bug (but I don't have a handy bookmark right now).
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Confirming: after applying the two patches Mika Fischer mentioned to
xorg-xserver-video-intel and mesa in Hardy, I can use a dual-head
desktop larger than 2048x2048 and Compiz works with no problems.
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You
The fix for the intel X driver is here:
http://gitweb.freedesktop.org/?p=xorg/driver/xf86-video-
intel.git;a=commit;h=4f5500abe209b92b39ae1f2d7a1118362ac95034
But Mesa/DRI also needs to be fixed accordingly. See the following response by
Keith Packard:
Any ideas? Do I need other patches, too?
Here's his response in the archive:
http://lists.freedesktop.org/archives/xorg/2008-April/034960.html
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And BTW, I'd also like someone to raise the importance on this bug,
since at leat for 965 it is definitely not a wishlist bug, bug a very
real bug which provents people from using Compiz in most dual-head
scenarios.
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any plan to incorporate the fix or is there any known 3rd party deb
package already available?
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It apparently is a driver bug, at least for some intel chipsets, see
comment #10.
** Changed in: xserver-xorg-video-intel (Ubuntu)
Status: Won't Fix = Confirmed
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got that, to make my question a bit more clear, as it was fixed upsteam,
what is the plan to release a ubuntu deb including the fix, or, is there
any (even beta) deb available already somewhere for testing. I would
have the alternative to compile the latest upsteam version but hate
doing things
Ralf, sorry, my comment was not meant for you but for the developers to
explain why I reopened this bug :)
I suspect that you will have to wait for Intrepid for a fix or use
unofficial packages (I don't know of any), sorry...
Maybe Bryce has some git versions packaged, but I don't know about
This is fixed upstream:
http://lists.freedesktop.org/archives/xorg/2008-April/034573.html (at
least for 965)
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Manuel Teira, have you tried making a virtual desktop where the screens
are one above other? Then you need only Virtual 1280 1792. I tried it
like that, but glxinfo tells me direct rendering: No (If you want to
find out why, try setting LIBGL_DEBUG=verbose). How do you make such a
setting? Which
This limitation exists on i945 as well. This is the graphics chipset in
the 2nd gen Apple MacBook. The macbook has no problem with direct
rendering at high resolutions in OS X, so this must be a limitation of
the driver, at least on the 945. I'll open a new bug if this one can't
be reopened.
This is a limitation in the driver for all intel chipsets. ;(
http://www.thinkwiki.org/wiki/Xorg_RandR_1.2#the_Virtual_screen
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I agree. However, an important point it whether it is /just/ a driver
limitation or a hardware limitation. I believe that, at least for 945,
it is just a driver limitation, which means that this bug should remain
open, and we need to work with upstream to get it fixed.
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El lun, 10-03-2008 a las 09:58 +, Jarno Suni escribió:
Manuel Teira, have you tried making a virtual desktop where the screens
are one above other? Then you need only Virtual 1280 1792.
Yes, that works for me, but I'm not able to get used to that (since my
screens are stacked vertically
So, the problem is the X architecture combined with that hardware
limitation, since I'm able to have Quartz Extreme working on OSX in this
machine, working with two monitors at the same time exceeding the 2048
resolution limit? Sadly to hear that this is not going to be fixed.
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Thanks Sam, closing as won't fix, since it's a limit of the hardware.
** Changed in: xserver-xorg-video-intel (Ubuntu)
Status: Confirmed = Won't Fix
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Reading the readme for the driver states that this is a hardware
limitation. I don't believe it's physically possible for the hardware
to provide dri for any virtual resolution past 2048, meaning the driver
never will support it.
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As Keith said in the aforementioned post, it is a limitation of the
-intel driver and not likely to get fixed upstream.
** Changed in: xserver-xorg-video-intel (Ubuntu)
Importance: Undecided = Wishlist
Status: New = Confirmed
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