Yuri Ribeiro Sucupira, could you please test the latest upstream kernel available from the very top line at the top of the page from http://kernel.ubuntu.com/~kernel-ppa/mainline/?C=N;O=D (the release names are irrelevant for testing, and please do not test the daily folder)? Install instructions are available at https://wiki.ubuntu.com/Kernel/MainlineBuilds . This will allow additional upstream developers to examine the issue.
If the latest kernel did not allow you to test to the issue (ex. you couldn't boot into the OS) please make a comment in your report about this, and continue to test the next most recent kernel version until you can test to the issue. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this issue is fixed in the mainline kernel, please add the following tags by clicking on the yellow circle with a black pencil icon, next to the word Tags, located at the bottom of the report description: kernel-fixed-upstream kernel-fixed-upstream-X.Y-rcZ Where X, and Y are the first two numbers of the kernel version, and Z is the release candidate number if it exists. If the mainline kernel does not fix the issue, please add the following tags: kernel-bug-exists-upstream kernel-bug-exists-upstream-X.Y-rcZ Please note, an error to install the kernel does not fit the criteria of kernel-bug-exists-upstream. Once testing of the latest upstream kernel is complete, please mark this report's Status as Confirmed. Please let us know your results. Thank you for your understanding. ** Tags removed: broadwell i915 ** Tags added: latest-bios-a06 ** Attachment removed: "ProcEnviron.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1520040/+attachment/4525546/+files/ProcEnviron.txt ** Attachment removed: "Dependencies.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1520040/+attachment/4525545/+files/Dependencies.txt ** Changed in: linux (Ubuntu) Importance: Low => Medium -- 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/1520040 Title: [drm:gen8_irq_handler [i915_bpo]] *ERROR* The master control interrupt lied (SDE)! Status in linux package in Ubuntu: Incomplete Bug description: Device: notebook Dell Inspiron 5548 Operating system: 64-bit XUbuntu Linux 14.04 LTS Processor: Intel Core i7-5500U Kernel: 3.19.0-33-generic #38~14.04.1-Ubuntu SMP x86_64 Video: dual chip. These are the two display controllers: - Advanced Micro Devices, Inc. [AMD/ATI] Topaz XT [Radeon R7 M260] display controller 33000000Hz (requires kernel module / device driver "fglrx"); and - Intel Corporation Broadwell-U Integrated Graphics VGA compatible controller 33000000Hz (requires kernel module / device driver "i915"). Problem: my notebook's operating system is switching to runlevel 0 (power off) randomly, subtly and thus unexpectedly. And if I 'cat /var/log/kern.log |grep -i i915' I get a lot of "[drm:gen8_irq_handler [i915_bpo]] *ERROR* The master control interrupt lied (SDE)!" messages. I'm under the impression that either the kernel or the kernel module "i915_bpo" is buggy. My notebook's problem can't be related to overheating, because it's a brand-new notebook (less than 1 month old) and I've already monitored its temperature parameters: nothing abnormal is happening. Also, I'm using a cooling laptop base/pad. Other kernels I've tested, with which the same issue happens: - 3.19.0-18-generic (kernel module: i915_bpo) - 3.19.0-23-generic (kernel module: i915_bpo) - 3.19.0-28-generic (kernel module: i915_bpo) - 4.2.0-18-generic (kernel module: i915) Temporary workaround: I downgraded to kernel "3.13.0-36-generic", which isn't buggy with its "i915_bdw.ko" (version 3.0) kernel object (module). Full path for this module: /lib/modules/3.13.0-36-generic/kernel/ubuntu/i915/i915_bdw.ko Notes: - "bdw" stands for "Broadwell" - "bpo", I believe, stands for "backport" ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.19.0-33-generic 3.19.0-33.38~14.04.1 ProcVersionSignature: Ubuntu 3.19.0-33.38~14.04.1-generic 3.19.8-ckt7 Uname: Linux 3.19.0-33-generic x86_64 NonfreeKernelModules: wl fglrx ApportVersion: 2.14.1-0ubuntu3.19 Architecture: amd64 CurrentDesktop: XFCE Date: Wed Nov 25 23:44:39 2015 InstallationDate: Installed on 2015-11-03 (22 days ago) InstallationMedia: Xubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805) SourcePackage: linux-lts-vivid UpgradeStatus: No upgrade log present (probably fresh install) --- ApportVersion: 2.14.1-0ubuntu3.19 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: yuriyrs 2832 F.... pulseaudio /dev/snd/controlC1: yuriyrs 2832 F.... pulseaudio CurrentDesktop: XFCE DistroRelease: Ubuntu 14.04 HibernationDevice: RESUME=UUID=a08f36f9-0611-4894-9da9-8b1dcc960a86 InstallationDate: Installed on 2015-11-03 (24 days ago) InstallationMedia: Xubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805) MachineType: Dell Inc. Inspiron 5548 NonfreeKernelModules: fglrx wl Package: linux (not installed) ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-33-generic.efi.signed root=UUID=4f05c2b3-c971-4bf8-bcb6-a76d60b68e45 ro quiet splash video.use_native_backlight=1 intremap=no_x2apic_optout vt.handoff=7 ProcVersionSignature: Ubuntu 3.19.0-33.38~14.04.1-generic 3.19.8-ckt7 RelatedPackageVersions: linux-restricted-modules-3.19.0-33-generic N/A linux-backports-modules-3.19.0-33-generic N/A linux-firmware 1.127.18 Tags: trusty Uname: Linux 3.19.0-33-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm audio cdrom dialout dip fax floppy fuse lpadmin netdev plugdev sambashare scanner sudo tape video _MarkForUpload: True dmi.bios.date: 10/12/2015 dmi.bios.vendor: Dell Inc. dmi.bios.version: A06 dmi.board.name: 0YDTG3 dmi.board.vendor: Dell Inc. dmi.board.version: A02 dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: A06 dmi.modalias: dmi:bvnDellInc.:bvrA06:bd10/12/2015:svnDellInc.:pnInspiron5548:pvrA06:rvnDellInc.:rn0YDTG3:rvrA02:cvnDellInc.:ct8:cvrA06: dmi.product.name: Inspiron 5548 dmi.product.version: A06 dmi.sys.vendor: Dell Inc. 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