This bug is missing log files that will aid in diagnosing the problem. >From a terminal window please run:
apport-collect 1536567 and then change the status of the bug to 'Confirmed'. If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'. This change has been made by an automated script, maintained by the Ubuntu Kernel Team. ** Changed in: linux (Ubuntu) Status: New => Incomplete -- 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/1536567 Title: i915 stop working after linux 4.2.0-21-generic Status in linux package in Ubuntu: Incomplete Bug description: Hello, After updating the linux kernel of my Ubuntu 15.10 from 4.2.0-21 to 4.2.0.22 I was unable to get to XFCE and slim login manager, I was stuck on a black screen with nothing displayed (no text/graphics). Same issue with latest 4.2.0.25. When I go back to 4.2.0-21 everything is working perfectly. So something is "broken" with i915 module starting 4.2.0.22 and newer. After some research online, I managed to make it work even with kernel 4.2.25 by doing this vodoo magic magic. It's not clear what made it work ;-P # /etc/default/grub GRUB_CMDLINE_LINUX="libata.force=noncq quirks.mbp_force_ahci=1 acpi_backlight=vendor apple_bl.use_gmux=1 reboot=pci i915.enable_ips=0 i915.i915_enable_fbc=1 i915.i915_enable_rc6=1 i915.lvds_channel_mode=2 i915.modeset=1 i915.lvds_use_ssc=0 intel_pstate=disable" # /etc/modprobe.d/i915.conf options i915 semaphores=1 # /etc/modprobe.d/blacklist blacklist intel_pstate reboot lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 15.10 Release: 15.10 Codename: wily uname -a Linux **** 4.2.0-25-generic #30-Ubuntu SMP Mon Jan 18 12:31:50 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux dmidecode -s system-product-name Macmini7,1 lspci -vv 00:02.0 VGA compatible controller: Intel Corporation Haswell-ULT Integrated Graphics Controller (rev 09) (prog-if 00 [VGA controller]) Subsystem: Apple Inc. Device 0141 Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+ Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0 Interrupt: pin A routed to IRQ 56 Region 0: Memory at a0000000 (64-bit, non-prefetchable) [size=4M] Region 2: Memory at 90000000 (64-bit, prefetchable) [size=256M] Region 4: I/O ports at 2000 [size=64] Expansion ROM at <unassigned> [disabled] Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit- Address: fee00018 Data: 0000 Capabilities: [d0] Power Management version 2 Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-) Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME- Capabilities: [a4] PCI Advanced Features AFCap: TP+ FLR+ AFCtrl: FLR- AFStatus: TP- Kernel driver in use: i915 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1536567/+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