This issue appears to be an upstream bug, since you tested the latest upstream kernel. Would it be possible for you to open an upstream bug report[0]? That will allow the upstream Developers to examine the issue, and may provide a quicker resolution to the bug.
Please follow the instructions on the wiki page[0]. The first step is to email the appropriate mailing list. If no response is received, then a bug may be opened on bugzilla.kernel.org. Once this bug is reported upstream, please add the tag: 'kernel-bug- reported-upstream'. [0] https://wiki.ubuntu.com/Bugs/Upstream/kernel -- 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/1627408 Title: Severe graphics regression with mainline kernel v4.7.5 on Broadwell 5500U Status in linux package in Ubuntu: Triaged Status in linux source package in Yakkety: Triaged Bug description: I would like to report a severe graphics regression, involving frequent rainbow-glitching and flickering on a x64 computer with Intel Broadwell 5500U processor w/ integrated graphics. This issue was not present on kernel v4.7.4, which I will continue to use. Due to unfortunate issues with Broadwell integrated graphics support, virtually every kernel build in the 4.8 release chain as well as the newest v4.7.5 kernel have this issue. Dramatic multicolored patches and glitched areas appear frequently when using my computer with these kernels installed. The behavior is very similar to that of the Broadwell graphics issues present in kernel version 4.6.x. Please fix this issue, I don't understand why NEWER kernels are actually causing significant graphical problems with older hardware. I am running Ubuntu 16.04.1 LTS on an HP Spectre x360 4102dx with an Intel Broadwell 5500U core i7 processor with integrated intel Broadwell GT2 graphics Here is my system configuration: H/W path Device Class Description ==================================================== system HP Spectre x360 Convertible (N5R94UA#ABA) /0 bus 802D /0/0 memory 64KiB BIOS /0/10 memory 32KiB L1 cache /0/11 memory 32KiB L1 cache /0/12 memory 256KiB L2 cache /0/13 memory 4MiB L3 cache /0/14 processor Intel(R) Core(TM) i7-5500U CPU @ 2.40GHz /0/16 memory 8GiB System Memory /0/16/0 memory 4GiB Row of chips Synchronous 1600 MHz (0.6 ns) /0/16/1 memory 4GiB Row of chips Synchronous 1600 MHz (0.6 ns) /0/100 bridge Broadwell-U Host Bridge -OPI /0/100/2 display Broadwell-U Integrated Graphics /0/100/3 multimedia Broadwell-U Audio Controller /0/100/14 bus Wildcat Point-LP USB xHCI Controller /0/100/14/0 usb2 bus xHCI Host Controller /0/100/14/1 usb1 bus xHCI Host Controller /0/100/14/1/1 input USB Receiver /0/100/14/1/3 multimedia HP Truevision Full HD /0/100/14/1/4 input Touchscreen /0/100/14/1/5 input ITE Device(8350) /0/100/14/1/7 communication Bluetooth wireless interface /0/100/16 communication Wildcat Point-LP MEI Controller #1 /0/100/1b multimedia Wildcat Point-LP High Definition Audio Controller /0/100/1c bridge Wildcat Point-LP PCI Express Root Port #2 /0/100/1c/0 generic RTS5227 PCI Express Card Reader /0/100/1c.2 bridge Wildcat Point-LP PCI Express Root Port #3 /0/100/1c.2/0 wlo1 network Wireless 7265 /0/100/1f bridge Wildcat Point-LP LPC Controller /0/100/1f.2 storage Wildcat Point-LP SATA Controller [AHCI Mode] /0/100/1f.3 bus Wildcat Point-LP SMBus Controller /0/1 scsi0 storage /0/1/0.0.0 /dev/sda disk 512GB SAMSUNG MZNTE512 /0/1/0.0.0/1 /dev/sda1 volume 449MiB Windows NTFS volume /0/1/0.0.0/2 /dev/sda2 volume 98MiB Windows FAT volume /0/1/0.0.0/3 /dev/sda3 volume 15MiB reserved partition /0/1/0.0.0/4 /dev/sda4 volume 15EiB Windows FAT volume /0/1/0.0.0/5 /dev/sda5 volume 807MiB Windows NTFS volume /0/1/0.0.0/6 /dev/sda6 volume 97GiB Windows NTFS volume /0/1/0.0.0/7 /dev/sda7 volume 89GiB EXT4 volume /0/1/0.0.0/8 /dev/sda8 volume 8098MiB Linux swap volume /1 power PK03056XL To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1627408/+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
