It's too late for Quantal now. Removing release team subscription.
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Title:
Max GL texture size can break multi-head
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This needs to be re-opened on gnome-desktop3 as on Quantal the error
message shown is no longer appropriate as unity-2d is not available.
As well as changing the error message is it not the case that on Quantal
the underlying problem can be solved by the use of llvmpipe? I keep
asking this
Please note, compiz 0.9.8.0 (released yesterday and coming soon to
quantal) will probably make this problem worse. That's because we use a
single texture to blit the whole screen now. But there is a plan to fix
that -- bug 1040478.
Fixing bug 1040478 should be considered a prerequisite to fixing
** Changed in: compiz
Assignee: Daniel van Vugt (vanvugt) = (unassigned)
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Title:
Max GL texture size can break multi-head
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On a laptop that supports 3d unless an attempt is made to extend the
desktop onto a second monitor, when the attempt to use the second
monitor is made a dialog pops up saying that unity is not supported and
that unity-2d should be used instead. Since that is no longer an option
the message should
In my naivity I had assumed that this bug would be sorted by the use of
llvmpipe in the same way that it is to be solved for hardware that does
not support 3d in the first place. Is that not the case?
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** Also affects: compiz
Importance: Undecided
Status: New
** Changed in: compiz
Assignee: (unassigned) = Daniel van Vugt (vanvugt)
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** Changed in: unity-distro-priority
Status: Fix Committed = Fix Released
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Title:
Max GL texture size can break multi-head
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I investigated a little bit, here's what GPU generation brought 4K
texture support, per manufacturer:
NVidia: GeForce FX series, released in 2003
AMD: Radeon X1000 series, released in 2005
Intel: this is the odd one out, again: GMA X4500, released in 2008
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Jay told it's not possible to do in unity-3d with a reasonable amount of
effort. We will keep the workaround for now
** Changed in: compiz (Ubuntu Precise)
Status: Triaged = Won't Fix
** Changed in: unity (Ubuntu Precise)
Status: Triaged = Won't Fix
** Changed in: unity (Ubuntu)
** Changed in: unity
Status: Triaged = Won't Fix
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Title:
Max GL texture size can break multi-head
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I think it's unlikely this bug will ever be solved, the warning is
good enough. While it's possible to work around maximum texture size
limitations, this does not come without overhead, and that's on old GPUs
with limited performance to start with. All modern and most not-that-
modern GPUs support
** Changed in: unity
Milestone: 5.6.0 = 5.8.0
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Title:
Max GL texture size can break multi-head
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** Changed in: unity (Ubuntu)
Milestone: ubuntu-12.04-beta-1 = ubuntu-12.04-beta-2
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Title:
Max GL texture size can break multi-head
To
Gnome display manager now shows a warning message and prevents the user
form setting a resolution that is higher than the maximum supported.
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** Also affects: unity-distro-priority
Importance: Undecided
Status: New
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Title:
Max GL texture size can break multi-head
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** Changed in: unity-distro-priority
Importance: Undecided = High
** Changed in: unity-distro-priority
Status: New = Fix Committed
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** Branch linked: lp:ubuntu/gnome-desktop3
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Title:
Max GL texture size can break multi-head
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** Changed in: unity (Ubuntu Precise)
Assignee: (unassigned) = Jay Taoko (jaytaoko)
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Title:
Max GL texture size can break multi-head
To
Does the remainder of this bug then be essentially dupe with bug
#830949?
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Title:
Max GL texture size can break multi-head
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** Changed in: unity
Milestone: backlog = 5.6.0
** Changed in: unity (Ubuntu Precise)
Milestone: None = ubuntu-12.04-beta-1
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Title:
Max
This bug was fixed in the package gnome-desktop3 - 3.3.5-0ubuntu1
---
gnome-desktop3 (3.3.5-0ubuntu1) precise; urgency=low
* Sync with Debian. Remaining changes:
* New upstream release.
- GnomeRR:
- Use GDK to get work area
- gnome_rr_screen_new() now creates a
** Tags added: rls-p-tracking
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Title:
Max GL texture size can break multi-head
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** Tags added: blocks-hwcert-enablement
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Title:
Max GL texture size can break multi-head
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I should note that the description is somewhat inaccurate:
1) Multi-head isn't really the problem, just the easiest way to reproduce it. A
single display with a high enough resolution can trigger it as well.
2) There are two separate limits: max texture size and max framebuffer size.
The former
** Changed in: gnome-desktop3 (Ubuntu Precise)
Importance: Undecided = High
** Changed in: gnome-desktop3 (Ubuntu Precise)
Status: Confirmed = Triaged
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** Changed in: unity
Importance: Critical = High
** Changed in: unity
Milestone: 4.8.0 = backlog
** Changed in: compiz (Ubuntu)
Importance: Critical = High
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** Tags removed: rls-mgr-o-tracking
** Tags added: rls-mgr-p-tracking
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Title:
Max GL texture size can break multi-head
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** Description changed:
There's a longstanding issue (see the duplicate bug #555641) with Compiz
and multi-monitor setups with any combined dimension larger than the
maximum GL texture size. It used to be the case that this would simply
crash compiz, but mesa now has code to fallback to
On Fri, 2011-09-30 at 11:17 +, Eloy Paris wrote:
Hi Chris,
I upgraded back to libgnome-desktop-3-2 3.2.0-0ubuntu2 and I am no
longer seeing the problem.
There are two other things that are different, though:
1. This time I turned the machine off instead of just doing a full
I'm not able to reproduce this, and from the logs you've posted it looks
like lightdm aborts well before the new gnome-desktop codepath is
reached. Could you please try upgrading back to libgnome-desktop-3-2
3.2.0-0ubuntu2 to see whether this was caused by an unrelated issue that
got fixed with a
Could that be related to:
https://bugs.launchpad.net/ubuntu/+source/nux/+bug/764044 ?
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Title:
Max GL texture size can break multi-head
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Hi Chris,
I upgraded back to libgnome-desktop-3-2 3.2.0-0ubuntu2 and I am no
longer seeing the problem.
There are two other things that are different, though:
1. This time I turned the machine off instead of just doing a full
restart. I don't know if this resets the hardware in some special way
** Changed in: unity
Status: Invalid = Triaged
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Title:
Max GL texture size can break multi-head
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The fix for this bug (in gnome-desktop3 3.2.0-0ubuntu2) seems to break
my system: after getting the lightdm greeter and entering my user
password to log in, I get a black screen, the screen flickers a few
times like if X were crashing a few times. A few seconds later I do get
the Unity interface
I am sorry for the lack of details -- I just don't know what information
might be useful to provide. I don't even know if I should be filing a
new bug for this. Here's something to get started but I am happy to
provide more information if requested:
* I am not using a multi-head setup when this
Ok. It's known that checking GL attributes might cause a crash, which
is why it's done in a separate process, which shouldn't affect the main
login sequence. Why is this stopping login, I wonder?
Does a file in /var/crash get generated when you try to login? That
should contain useful
This bug was fixed in the package gnome-desktop3 - 3.2.0-0ubuntu2
---
gnome-desktop3 (3.2.0-0ubuntu2) oneiric; urgency=low
* debian/patches/02_refuse_to_break_GL_compositors.patch:
- Check whether Unity is running and if so refuse to configure a multi-head
setup larger
This is a rather big and not yet widely tested patch, but the only
option we have right now to prevent people from breaking their screen
config, so we need to take it. The error prone bits are in the separate
callout, so the impact of bugs there is indeed rather limited.
Thanks for working on
** Branch linked: lp:ubuntu/gnome-desktop3
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Title:
Max GL texture size can break multi-head
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** Description changed:
There's a longstanding issue (see the duplicate bug #555641) with Compiz
and multi-monitor setups with any combined dimension larger than the
maximum GL texture size. It used to be the case that this would simply
crash compiz, but mesa now has code to fallback to
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: gnome-desktop3 (Ubuntu P-series)
Status: New = Confirmed
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I've got a patch for this; I'm cleaning it up and will propose a merge.
** Package changed: gnome-settings-daemon (Ubuntu Oneiric) = gnome-
desktop3 (Ubuntu Oneiric)
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** Branch linked: lp:~raof/gnome-desktop/workaround-bug-824099
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Title:
Max GL texture size can break multi-head
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Ok, it looks like this will be relatively easy; there's already support
for failing to configure displays when the framebuffer gets bigger than
the maximum virtual size. Adding a check to fail when the framebuffer
gets bigger than the max GL texture size *should* be straightforward.
** Changed
** Changed in: unity (Ubuntu)
Importance: Undecided = High
** Changed in: unity (Ubuntu)
Status: New = Triaged
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Title:
Max GL texture
** Changed in: unity (Ubuntu P-series)
Importance: Undecided = High
** Changed in: unity (Ubuntu P-series)
Status: New = Triaged
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Title:
** Description changed:
+ There's a longstanding issue (see the duplicate bug #555641) with Compiz
+ and framebuffers larger than the maximum GL texture size. It used to be
+ the case that this would simply crash compiz, but mesa now has code to
+ fallback to software rendering for those cases.
** Changed in: gnome-settings-daemon (Ubuntu Oneiric)
Assignee: (unassigned) = Chris Halse Rogers (raof)
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Title:
Max GL texture size can
** Description changed:
There's a longstanding issue (see the duplicate bug #555641) with Compiz
and multi-monitor setups with any combined dimension larger than the
maximum GL texture size. It used to be the case that this would simply
crash compiz, but mesa now has code to fallback to
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