Re: [Bug 288822] Re: Slight ripping of video when compiz is enabled
*** This bug is a duplicate of bug 212587 *** https://bugs.launchpad.net/bugs/212587 Ok, sorry for the delay. I did as you asked, I took one screenshot using medium compiz settings. and one using extra compiz settings. Although the medium seemed to have visably less tearing when i moved my windows around, the screenshots still are completely distorted. http://i39.tinypic.com/ejdk5y.png (medium settings, slow movement) http://i43.tinypic.com/35lrfpd.png (extra settings, slow movement) I might later try to record video of monitor and check for tearing, just to confirm this isn't some printscreen glitch. On Tue, Jun 23, 2009 at 11:21 AM, Graeme Humphriesgra...@sudo.ca wrote: *** This bug is a duplicate of bug 212587 *** https://bugs.launchpad.net/bugs/212587 That's very interesting. Your problem definitely appears in the framebuffer, which indicates 2 things to me: - Your install isn't doing double buffering, as double buffering would never have this issue visually appear in the framebuffer. - Your install isn't even attempting to vsync, as if it was, it would be doing double buffering. This makes me suspect this may not be a dupe of #212587. For some reason, your window manager or copy of X isn't doing proper double buffering. With the proprietary NV drivers, can you enable compiz effects, and see if this changes things at all? -- Slight ripping of video when compiz is enabled https://bugs.launchpad.net/bugs/288822 You received this bug notification because you are a direct subscriber of the bug (via bug 212587). Status in “compiz” source package in Ubuntu: New Bug description: Binary package hint: compiz While watching movies I see slight ripping during fast video playback with any player only when compiz is enabled -- Slight ripping of video when compiz is enabled https://bugs.launchpad.net/bugs/288822 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 288822] Re: Slight ripping of video when compiz is enabled
*** This bug is a duplicate of bug 212587 *** https://bugs.launchpad.net/bugs/212587 Yeah, if it does that on the monitor as well as in the buffer when doing printscreen, then there's definitely some sort of rendering path problem on your system, that isn't the same as the missing vsync from bug #212587. At most, a vsync issue (with double buffering) should only have a single tear in a window, not a ton like you're seeing here. -- Slight ripping of video when compiz is enabled https://bugs.launchpad.net/bugs/288822 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 288822] Re: Slight ripping of video when compiz is enabled
*** This bug is a duplicate of bug 212587 *** https://bugs.launchpad.net/bugs/212587 ** This bug has been marked a duplicate of bug 212587 Vsync setting has no effect -- Slight ripping of video when compiz is enabled https://bugs.launchpad.net/bugs/288822 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 288822] Re: Slight ripping of video when compiz is enabled
*** This bug is a duplicate of bug 212587 *** https://bugs.launchpad.net/bugs/212587 I am running windows xp nvidia 7600gs, with the latest drivers. Forced Vsync option enabled. I get 100% vsync when I move windows around rapidly and take screenshot. I get 0% vsync doing same thing on latest kubuntu, with latest proprietary nvidia drivers, and open source nv driver, with all vsync options enabled. Strangely, I do have fps cap at 60 fps on glx gears. Yet applications visibly tears apart if I move them around too fast, movies also tear apart mid frame, even though my pc is more than fast enough to handle full hd video playback without tearing on windows xp. What really is the issue perhaps might be, there is no concrete way of testing if vsync is working besides high speed window movement and printscreen. Most other bugs are easily verified, yet vsync is hard to confirm on a stationary screen. Anyone care to develop a program that reads the framebuffer and determines if vsync is working? Nick On Tue, Jun 23, 2009 at 3:03 AM, Robert Ancellrobert.anc...@canonical.com wrote: *** This bug is a duplicate of bug 212587 *** https://bugs.launchpad.net/bugs/212587 ** This bug has been marked a duplicate of bug 212587 Vsync setting has no effect -- Slight ripping of video when compiz is enabled https://bugs.launchpad.net/bugs/288822 You received this bug notification because you are a direct subscriber of the bug (via bug 212587). Status in “compiz” source package in Ubuntu: New Bug description: Binary package hint: compiz While watching movies I see slight ripping during fast video playback with any player only when compiz is enabled -- Slight ripping of video when compiz is enabled https://bugs.launchpad.net/bugs/288822 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 288822] Re: Slight ripping of video when compiz is enabled
*** This bug is a duplicate of bug 212587 *** https://bugs.launchpad.net/bugs/212587 Nick: You can't check the framebuffers for vsync problems, because it's not an issue that'll show up in the framebuffer. Typically, in applications that attempt to do vsync, there are two complete, correct buffers. The app then swaps the inactive (back) buffer to screen when the monitor is doing its vertical sync, (ie, not drawing to the screen) so that screen updates aren't visible to the user. If there's a problem with that code, it swaps the buffers in the middle of drawing the screen, and you see the tearing effect. So there's really nothing to check in the buffers, as they'll likely always be correct. The problem is a matter of timing: when is compiz or whatever window manager you're using swapping the buffers? And why isn't it doing it during the monitor vsync? -- Slight ripping of video when compiz is enabled https://bugs.launchpad.net/bugs/288822 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 288822] Re: Slight ripping of video when compiz is enabled
*** This bug is a duplicate of bug 212587 *** https://bugs.launchpad.net/bugs/212587 Graeme: Hai, can you think of any test to determine if vsync is working? When I move windows rapidly, and then do printscreen, i get massively distorted images. Fedora also seems to be effected, yet this glitch? never happens on windows xp. http://i44.tinypic.com/24l6kgx.png ( pretty fast) http://i43.tinypic.com/13ygg41.png ( very slow movement) What do you think? On Tue, Jun 23, 2009 at 10:04 AM, Graeme Humphriesgra...@sudo.ca wrote: *** This bug is a duplicate of bug 212587 *** https://bugs.launchpad.net/bugs/212587 Nick: You can't check the framebuffers for vsync problems, because it's not an issue that'll show up in the framebuffer. Typically, in applications that attempt to do vsync, there are two complete, correct buffers. The app then swaps the inactive (back) buffer to screen when the monitor is doing its vertical sync, (ie, not drawing to the screen) so that screen updates aren't visible to the user. If there's a problem with that code, it swaps the buffers in the middle of drawing the screen, and you see the tearing effect. So there's really nothing to check in the buffers, as they'll likely always be correct. The problem is a matter of timing: when is compiz or whatever window manager you're using swapping the buffers? And why isn't it doing it during the monitor vsync? -- Slight ripping of video when compiz is enabled https://bugs.launchpad.net/bugs/288822 You received this bug notification because you are a direct subscriber of the bug (via bug 212587). Status in “compiz” source package in Ubuntu: New Bug description: Binary package hint: compiz While watching movies I see slight ripping during fast video playback with any player only when compiz is enabled -- Slight ripping of video when compiz is enabled https://bugs.launchpad.net/bugs/288822 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 288822] Re: Slight ripping of video when compiz is enabled
*** This bug is a duplicate of bug 212587 *** https://bugs.launchpad.net/bugs/212587 That's very interesting. Your problem definitely appears in the framebuffer, which indicates 2 things to me: - Your install isn't doing double buffering, as double buffering would never have this issue visually appear in the framebuffer. - Your install isn't even attempting to vsync, as if it was, it would be doing double buffering. This makes me suspect this may not be a dupe of #212587. For some reason, your window manager or copy of X isn't doing proper double buffering. With the proprietary NV drivers, can you enable compiz effects, and see if this changes things at all? -- Slight ripping of video when compiz is enabled https://bugs.launchpad.net/bugs/288822 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 288822] Re: Slight ripping of video when compiz is enabled
This may be a duplicate of bug #212587. -- Slight ripping of video when compiz is enabled https://bugs.launchpad.net/bugs/288822 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
