On Fri, 2015-08-21 at 15:24 +0200, Martin Stransky wrote: > I see the same flickering on NVIDIA hardware. Intel seems to be fine. > I'm getting flickering (but only when scrolling up) on the linked cairo xrender bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1015218 Adapter Description Intel Open Source Technology Center -- Mesa DRI Intel(R) Haswell Mobile Asynchronous Pan/Zoom none Device ID Mesa DRI Intel(R) Haswell Mobile Driver Version 3.0 Mesa 10.6.3 (git-ccef890) GPU Accelerated Windows 0/3 Basic (OMTC) Supports Hardware H264 Decoding false Vendor ID Intel Open Source Technology Center WebGL Renderer Intel Open Source Technology Center -- Mesa DRI Intel(R) Haswell Mobile windowLayerManagerRemote true AzureCanvasBackend cairo AzureContentBackend cairo AzureFallbackCanvasBackend none AzureSkiaAccelerated 0 > On 08/21/2015 03:06 PM, Alexander Ploumistos wrote: > > On Fri, Aug 21, 2015 at 11:33 AM, Martin Stransky < > > stransky@xxxxxxxxxx> wrote: > > > - Install Firefox 40 on Fedora 22,23,Rawhide (you'd need Gtk3 > > > build) > > > - go to about:config, click to any key and add a new one, boolean > > > type. The > > > new key name is "layers.use-image-offscreen-surfaces" and set it > > > to true. > > > - enable "layers.offmainthreadcomposition.enabled" which may be > > > disabled > > > now. > > > > What about "layers.acceleration.force-enabled"? > > > > > And you're set now. Please report any oddity (different than the > > > usual ones > > > :)) at #BZ. > > > > On my desktop (f22), with a GeForce 9800 GT and the 340.76 driver > > from > > nVidia I am getting a lot of flickering when I scroll through some > > pages (e.g. MDN, Ars Techinca, gmail) especially when they contain > > fixed or sticky elements or elements whose background image is > > repeated along the x and y axes. If you can get your hands on > > similar > > hardware, scroll through this: > > https://developer.mozilla.org/en-US/docs/Web/CSS/position > > > > On a recent laptop (f22), with nVidia and Intel dual graphics, > > there > > is no such problem on either adapter. > > > > I have been unable to reproduce the crashes we were investigating > > so > > far, so perhaps enabling "layers.use-image-offscreen-surfaces" > > could > > be a solution (and I should get a newer graphics card - anyone > > cares > > to get me a late birthday present?). > > > > > > This is the graphics information provided by firefox for the > > desktop: > > > > Adapter Description NVIDIA Corporation -- GeForce 9800 > > GT/PCIe/SSE2 > > Asynchronous Pan/Zoom none > > Device ID GeForce 9800 GT/PCIe/SSE2 > > Driver Version 3.3.0 NVIDIA 340.76 > > GPU Accelerated Windows 0/1 Basic (OMTC) > > Supports Hardware H264 Decoding false > > Vendor ID NVIDIA Corporation > > WebGL Renderer NVIDIA Corporation -- GeForce 9800 GT/PCIe/SSE2 > > windowLayerManagerRemote true > > AzureCanvasBackend cairo > > AzureContentBackend cairo > > AzureFallbackCanvasBackend none > > AzureSkiaAccelerated 0 > > > > > > and for the laptop: > > > > Adapter Description NVIDIA Corporation -- GeForce GTX > > 860M/PCIe/SSE2 > > Asynchronous Pan/Zoom none > > Device ID GeForce GTX 860M/PCIe/SSE2 > > Driver Version 4.5.0 NVIDIA 352.21 > > GPU Accelerated Windows 0/1 Basic (OMTC) > > Supports Hardware H264 Decoding false > > Vendor ID NVIDIA Corporation > > WebGL Renderer NVIDIA Corporation -- GeForce GTX 860M/PCIe/SSE2 > > windowLayerManagerRemote true > > AzureCanvasBackend cairo > > AzureContentBackend cairo > > AzureFallbackCanvasBackend none > > AzureSkiaAccelerated 0 > > > > > > Adapter Description Intel Open Source Technology Center -- Mesa > > DRI > > Intel(R) Haswell Mobile > > Asynchronous Pan/Zoom none > > Device ID Mesa DRI Intel(R) Haswell Mobile > > Driver Version 3.0 Mesa 10.6.3 (git-ccef890) > > GPU Accelerated Windows 0/1 Basic (OMTC) > > Supports Hardware H264 Decoding false > > Vendor ID Intel Open Source Technology Center > > WebGL Renderer Intel Open Source Technology Center -- Mesa DRI > > Intel(R) Haswell Mobile > > windowLayerManagerRemote true > > AzureCanvasBackend cairo > > AzureContentBackend cairo > > AzureFallbackCanvasBackend none > > AzureSkiaAccelerated 0 > > > -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct
