This feels like the same issue as bug 145431 where compiz simply had the
wrong framerate so was trying to sync to the wrong frequency.
In older versions of CCSM there was an option to fix the framerate
manually. I remember it used to incorrectly detect 50Hz where it should
have been 60Hz. But I
** Changed in: compiz (Ubuntu)
Status: Confirmed = In Progress
** Changed in: compiz (Ubuntu)
Assignee: (unassigned) = Daniel van Vugt (vanvugt)
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Tracked down the problem. (Obviously) ATI's implementation of
GLX_SGI_video_sync does not behave the way compiz expects it to. And
compiz is frequently skipping 1-2 frames, making a 60Hz display actually
render compiz at 20-30Hz.
The confusion is that compiz expects glXGetVideoSyncSGI to return
@David Horváth Maybe switch to Unity 2D for the time being. It is
working very well for me. Only the spread and desktop switcher
animations are a bit sluggish and with some visual corruption, but other
than that performance is awesome. I'm also using an HD4200 with the
latest Catalyst 11.6.
The
@Devius Big ups! Unity-2D makes my workspace bearable again, thanks for
that!
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Title:
Fglrx with Compiz's Sync to Vblank makes Unity/Compiz
I confirm the choppiness on HD4200, and upgraded to 8.850 ATI driver to
see if it differs, but not.
Any workarounds?
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Title:
Fglrx with Compiz's
Guys, after installing compiz settings manager and removing vsync
checkbox, performance is ok for HD 4770. Ati takes care of vsync with
their Tear Free whatever so no vsync issues after removing that
checkbox. This is major problem for Ati owners.
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I can confirm this on my desktop (Radeon HD 4850) and notebook (Fusion
E-350). Disabling Sync to Vblank in CCSM improves desktop performance A
LOT.
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@Marko Martinović, Dennis-martin-herbers: It's still far from the
optimum (and even far from the open-source drivers' performance) after
disabling `Sync to Vblank` in CCSM (Radeon 4250). Menus and windows
appear with delay. GUI is still choppy.
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Confirmed.
The problem occurs with ATI Radeon HD 4250. Everything is really choppy even
with sync-to-vblank off and all those fixes enabled in Catalyst Control Center
(described above). Tested both on repository-native drivers and 11.5 from the
producer's website.
The open driver works very
Sorry to bother but...
There's also a similar bug report for NVIDIA users, see bug 760814.
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Title:
Fglrx with Compiz's Sync to Vblank makes
Even disabling VSync the performance is appalling on my 4870x2, where on
10.10 everything was silky smooth.
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Title:
Fglrx with Compiz's Sync to
Unfortunately it's not a solution. Open driver has major power management
issues that prevent many people to use it. See bug 563156.
It's a real shame because it's true, performance-wise (non-gaming) radeon
driver has no issues whatsoever.
Il giorno 04/mag/2011 11:49, bagl0312
@bagl0312 No joy. I can't seem to get X to start without fglrx and
video-ati.
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Title:
Fglrx with Compiz's Sync to Vblank makes Unity/Compiz
Downloaded and installed ati-driver-installer-11-4-x86.x86_64.run for
the 48xx series, using debs generated from it. Still getting 59 - 60 fps
from glxgears. That's with synch to Vblank and detect refresh rate in
compiz manager turned off. With them turned on its still 60 fps.
fglrxinfo tells me I
@Felix: Thanks for the suggestion. That fixes the the fgl_glxgears
update issue but the whole system still feels slower than before. The
Compiz window repaint problem is still there - it would redraw fairly
often if I move the mouse slowly while moving a window around but if I
start moving it
I can confirm big problems fglrx and new compiz version. I am using a
Radeon 4200 onboard device. But I cant confirm that disabling the v-sync
option in CCSM and compiz increases the situation. Its rather the
opposite. With this option disabled I have to wait some seconds until a
window follows my
Look here:
https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/768275/comments/5
I found that disabling fglrx and using the open source drivers improves
a lot the speed for my card:
01:05.0 VGA compatible controller: ATI Technologies Inc RS880 [Radeon HD
4200]
Of course also proprietary
@robinl: I've seen that problem. The updates very infrequently when
there is a high FPS application running, for example glxgears or
fgl_glxgears. I believe this is a bug in compiz. Setting Wait for
vertical refresh under 3D-More Settings to Always on works around
the problem for me because it
** Changed in: fglrx-installer (Ubuntu)
Status: New = Confirmed
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Title:
Fglrx with Compiz's Sync to Vblank makes Unity/Compiz plugins to
** Also affects: compiz (Ubuntu)
Importance: Undecided
Status: New
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Title:
Fglrx with Compiz's Sync to Vblank makes Unity/Compiz
Adding a compiz task. Whether or not there's an actual compiz bug under
here, it seems like there's a workaround that could be applied in
Compiz.
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Same here, even after disabling VSync setting. I see a significant
slowdown in simply typing in a text box or using Eclipse vs. 10.10. Even
spinners in Firefox are choppy. Oddly enough, the Unity Launcher bar
scrolls in and out like butter. Xorg and compiz are also chewing up a
lot of CPU cycles,
same here. even with v-blank disabled the graphics are slow/laggy.
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Title:
Fglrx with Compiz's Sync to Vblank makes Unity/Compiz plugins to
The Catalyst Control Center has two vblank settings. One is the global
tear-free setting under Display Option. The other one is Wait for
vertical refresh under 3D-More Settings.
Does it help if you set the latter to Off, unless applications
specifies and restart X?
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@ Felix, your suggestion didn't help in my case.
Could other people test Felix's suggestion as well?
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Title:
Fglrx with Compiz's Sync to Vblank
@Felix Didn't work here either.
Interesting thing I noticed after restarting Xorg was that workspace
switching is really smooth with no windows open. Soon as I opened
Chrome, performance took a dive and gets progressively worse as windows
open...
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Both tear-free and Wait for vertical refresh are off - still have very
poor responsiveness and frame rates while moving windows and switching
between applications on my Radeon 5850.
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I am facing the same issue and I have raised the another bug for it.
Application switching the quite sluggish. Is there anyway we can
increase the severity of this issue, so that Ubuntu team will start
looking into it seriously.
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@robinl: What about the sync-to-vsync setting in CompizConfig Settings
Manager (AKA ccsm)? As already reported by other users, this seems to be
the main problem leading to poor compositor frame rates on Ubuntu 11.04
with fglrx, regardless of raw hardware performance.
Some users with low end or
@Felix That's off too. V-sync is off in both Catalyst centre and ccsm,
and tear-free is off too. When I drag windows around my mouse cursor
seems to follow my movement without any problems but the window will
only redraw at around 1-2fps. Running fgl_glxgears gives me fps in the
thousands but the
Tried fgl_glxgears and got an interesting result, a little different
than robinl. It flew along at ~450fps, updating image the entire time,
no problem. It would only stop and choke when my XTerm displayed the fps
results. I minimized my XTerm, no more choking. I tried something else
-- I minimized
Confirming this on 11.04 on ATI HD 5470 - sync to Vblank off is a major boost
in performance.
Also, the website issue manifestation is there also, the entire system is much
slower.
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I confirm that Sync to VBlank improved situation.
But graphics on my desktop is still significantly slower than in 10.10,
especially in 3d effects like application switchers, which are now not
responsive enough to be pleasant in daily work.
Tested both in Unity and Classic.
ATI Radeon HD 3200
I can confirm on Ati Mobilty Radeon HD 4570.
More than being slow, the real pain is wepages showing tearing while scrolling.
Anybody experiencing this too?
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** Attachment added: Xorg.0.log
https://bugs.launchpad.net/ubuntu/+source/fglrx-installer/+bug/763005/+attachment/2049371/+files/Xorg.0.log
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Sync to Vblank can be found from CompizConfig Settings Manager -
OpenGl - Sync to Vblank
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Title:
Fglrx with Compiz's Sync to Vblank makes
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