Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.17 kernel[0].
If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'. Once testing of the upstream kernel is complete, please mark this bug as "Confirmed". Thanks in advance. [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.17 ** Package changed: linux-hwe (Ubuntu) => linux (Ubuntu) ** Changed in: linux (Ubuntu) Importance: Undecided => Medium ** Tags added: artful kernel-da-key ** Tags added: needs-bisect -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1776642 Title: Temporal dithering started appearing on Intel HD 530 graphics Status in linux package in Ubuntu: New Bug description: I am experiencing a regression in linux-image-generic-hwe-16.04 with Intel HD Graphics 530 (Core i5-6600T), starting in 4.13.0-43 (considering only kernels which appear in my GRUB menu). Some form of spatio-temporal dithering has been enabled. This is causing a shimmering effect and visible dithering patterns (like woven textile) which are noticeable on photographs and areas of similar colour. 1px borders in the UI can appear to have a "marching ants" effect. The effect is visible both under Xorg and in a virtual console (Ctrl+Alt+F1), if the displayed colours are suitable to trigger it. Booting 4.13.0-41 eliminates the temporal dithering. This occurs on a (presumed) 6bpp laptop LCD panel, so dithering is necessary, but in previous kernels only a form of spatial dithering is applied, which is less visually obvious. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1776642/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
