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
