This bug also affects me, I have the same laptop, dell 9550, 1920x1080 screen with i7. I'm working on the intel card and it flashes black every now and then.
-- 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/1555158 Title: Screen flickering in kernel > 4.4.0-8 on XPS 9550 Status in linux package in Ubuntu: Confirmed Status in linux source package in Xenial: Confirmed Bug description: On my Dell XPS 15 9550(core i3 integrated graphics), the screen started glitching on kernel 4.4.0-11. This glitching goes away if I reboot to kernel 4.4.0-4. --- ApportVersion: 2.20-0ubuntu3 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: pranith 1360 F.... pulseaudio CurrentDesktop: Unity DistroRelease: Ubuntu 16.04 Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 002: ID 0c45:6713 Microdia Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: Dell Inc. XPS 15 9550 Package: linux (not installed) ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-11-generic.efi.signed root=UUID=a16c8d99-e1e9-47d7-8873-d3e2800eee71 ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 4.4.0-11.26-generic 4.4.4 RelatedPackageVersions: linux-restricted-modules-4.4.0-11-generic N/A linux-backports-modules-4.4.0-11-generic N/A linux-firmware 1.156 RfKill: 1: phy1: Wireless LAN Soft blocked: no Hard blocked: no Tags: xenial Uname: Linux 4.4.0-11-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 12/18/2015 dmi.bios.vendor: Dell Inc. dmi.bios.version: 01.01.15 dmi.board.name: 0WNFM0 dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr01.01.15:bd12/18/2015:svnDellInc.:pnXPS159550:pvr:rvnDellInc.:rn0WNFM0:rvrA00:cvnDellInc.:ct9:cvr: dmi.product.name: XPS 15 9550 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1555158/+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
