[Bug 1651294] Re: [Lenovo IdeaCentre A540] Doesn't poweroff on shutdown
** Description changed: - My computer (model Lenovo A540 Haswell) hangs indefinitely at shutdown and doesn't react to most keyboard combinations. - I have to press the power button for a few (~5) seconds in order to shut it down. + My computer (model Lenovo A540 Haswell) hangs indefinitely at shutdown + and doesn't react to most keyboard combinations. I have to press the + power button for a few (~5) seconds in order to shut it down. + + This started happening after switching from Lubuntu 15.10 to Lubuntu + 16.04. I don't have this problem with Windows 10 (dual boot). ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-53-generic 4.4.0-53.74 ProcVersionSignature: Ubuntu 4.4.0-53.74-generic 4.4.30 Uname: Linux 4.4.0-53-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.4 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC0: nico 2096 F pulseaudio /dev/snd/controlC1: nico 2096 F pulseaudio CurrentDesktop: LXDE Date: Mon Dec 19 20:54:01 2016 HibernationDevice: RESUME=UUID=ef8c9700-bfb5-44a4-8d49-f82e03fd6e68 InstallationDate: Installed on 2016-02-13 (310 days ago) InstallationMedia: Lubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021) MachineType: LENOVO F0AN ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-53-generic root=UUID=4d7d95e5-cfce-4e21-84fb-2dd965595f63 ro acpi=noirq net.ifnames=0 biosdevname=0 quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.4.0-53-generic N/A linux-backports-modules-4.4.0-53-generic N/A linux-firmware1.157.6 SourcePackage: linux StagingDrivers: r8723au UpgradeStatus: Upgraded to xenial on 2016-12-17 (2 days ago) dmi.bios.date: 09/30/2014 dmi.bios.vendor: LENOVO dmi.bios.version: O00KT19AUS dmi.board.name: INVALID dmi.board.vendor: LENOVO dmi.board.version: 31900058 STD dmi.chassis.type: 13 dmi.chassis.vendor: LENOVO dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnLENOVO:bvrO00KT19AUS:bd09/30/2014:svnLENOVO:pnF0AN:pvrLenovoA540:rvnLENOVO:rnINVALID:rvr31900058STD:cvnLENOVO:ct13:cvrChassisVersion: dmi.product.name: F0AN dmi.product.version: Lenovo A540 dmi.sys.vendor: LENOVO -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1651294 Title: [Lenovo IdeaCentre A540] Doesn't poweroff on shutdown To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1651294/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1651294] Re: [Lenovo IdeaCentre A540] Doesn't poweroff on shutdown
** Description changed: - My cpmputer (model Lenovo A540 Haswell) hangs indefinitely at shutdown and doesn't react to most keyboard combinations. + My computer (model Lenovo A540 Haswell) hangs indefinitely at shutdown and doesn't react to most keyboard combinations. I have to press the power button for a few (~5) seconds in order to shut it down. I don't have this problem with Windows 10 (dual boot). ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-53-generic 4.4.0-53.74 ProcVersionSignature: Ubuntu 4.4.0-53.74-generic 4.4.30 Uname: Linux 4.4.0-53-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.4 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC0: nico 2096 F pulseaudio /dev/snd/controlC1: nico 2096 F pulseaudio CurrentDesktop: LXDE Date: Mon Dec 19 20:54:01 2016 HibernationDevice: RESUME=UUID=ef8c9700-bfb5-44a4-8d49-f82e03fd6e68 InstallationDate: Installed on 2016-02-13 (310 days ago) InstallationMedia: Lubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021) MachineType: LENOVO F0AN ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-53-generic root=UUID=4d7d95e5-cfce-4e21-84fb-2dd965595f63 ro acpi=noirq net.ifnames=0 biosdevname=0 quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.4.0-53-generic N/A linux-backports-modules-4.4.0-53-generic N/A linux-firmware1.157.6 SourcePackage: linux StagingDrivers: r8723au UpgradeStatus: Upgraded to xenial on 2016-12-17 (2 days ago) dmi.bios.date: 09/30/2014 dmi.bios.vendor: LENOVO dmi.bios.version: O00KT19AUS dmi.board.name: INVALID dmi.board.vendor: LENOVO dmi.board.version: 31900058 STD dmi.chassis.type: 13 dmi.chassis.vendor: LENOVO dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnLENOVO:bvrO00KT19AUS:bd09/30/2014:svnLENOVO:pnF0AN:pvrLenovoA540:rvnLENOVO:rnINVALID:rvr31900058STD:cvnLENOVO:ct13:cvrChassisVersion: dmi.product.name: F0AN dmi.product.version: Lenovo A540 dmi.sys.vendor: LENOVO -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1651294 Title: [Lenovo IdeaCentre A540] Doesn't poweroff on shutdown To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1651294/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1651294] Re: [Lenovo IdeaCentre A540] Doesn't poweroff on shutdown
** Description changed: - After switching from Lubuntu 15.10 to Lubuntu 16.04, I cannot shutdown my (Lenovo A540) computer anymore. The Lubuntu logout screen hangs indefinitely and doesn't react to most keyboard combinations. - I thus have to press the power button for a few (~5) seconds in order to shut it down. + My cpmputer (model Lenovo A540 Haswell) hangs indefinitely at shutdown and doesn't react to most keyboard combinations. + I have to press the power button for a few (~5) seconds in order to shut it down. I don't have this problem with Windows 10 (dual boot). ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-53-generic 4.4.0-53.74 ProcVersionSignature: Ubuntu 4.4.0-53.74-generic 4.4.30 Uname: Linux 4.4.0-53-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.4 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC0: nico 2096 F pulseaudio /dev/snd/controlC1: nico 2096 F pulseaudio CurrentDesktop: LXDE Date: Mon Dec 19 20:54:01 2016 HibernationDevice: RESUME=UUID=ef8c9700-bfb5-44a4-8d49-f82e03fd6e68 InstallationDate: Installed on 2016-02-13 (310 days ago) InstallationMedia: Lubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021) MachineType: LENOVO F0AN ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-53-generic root=UUID=4d7d95e5-cfce-4e21-84fb-2dd965595f63 ro acpi=noirq net.ifnames=0 biosdevname=0 quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.4.0-53-generic N/A linux-backports-modules-4.4.0-53-generic N/A linux-firmware1.157.6 SourcePackage: linux StagingDrivers: r8723au UpgradeStatus: Upgraded to xenial on 2016-12-17 (2 days ago) dmi.bios.date: 09/30/2014 dmi.bios.vendor: LENOVO dmi.bios.version: O00KT19AUS dmi.board.name: INVALID dmi.board.vendor: LENOVO dmi.board.version: 31900058 STD dmi.chassis.type: 13 dmi.chassis.vendor: LENOVO dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnLENOVO:bvrO00KT19AUS:bd09/30/2014:svnLENOVO:pnF0AN:pvrLenovoA540:rvnLENOVO:rnINVALID:rvr31900058STD:cvnLENOVO:ct13:cvrChassisVersion: dmi.product.name: F0AN dmi.product.version: Lenovo A540 dmi.sys.vendor: LENOVO -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1651294 Title: [Lenovo IdeaCentre A540] Doesn't poweroff on shutdown To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1651294/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1651294] Re: [Lenovo IdeaCentre A540] Doesn't poweroff on shutdown
Nicolas K, it wouldn't hurt to contact Lenovo requesting a version for your hardware (or confirm yours is the latest). Could you please advise? ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1651294 Title: [Lenovo IdeaCentre A540] Doesn't poweroff on shutdown To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1651294/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1651294] Re: [Lenovo IdeaCentre A540] Doesn't poweroff on shutdown
** Tags removed: bios-outdated-o14kt19aus ** Tags added: latest-bios-o00kt19aus -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1651294 Title: [Lenovo IdeaCentre A540] Doesn't poweroff on shutdown To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1651294/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1651294] Re: [Lenovo IdeaCentre A540] Doesn't poweroff on shutdown
Christopher, the BIOS update you mention is for the Broadwell system (BIOS 014KT19AUS), while my computer is Haswell-based (BIOS 0OOKT19AUS). ** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1651294 Title: [Lenovo IdeaCentre A540] Doesn't poweroff on shutdown To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1651294/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1651294] Re: [Lenovo IdeaCentre A540] Doesn't poweroff on shutdown
Nicolas K, as per http://support.lenovo.com/us/en/products/Desktops-and- all-in-ones/Lenovo-A-Series-all-in-ones/Lenovo-A540-All-In- One/F0AN?tabName=Downloads=Mast:SubNav:Support:Drivers%20and%20Software|Drivers%20and%20Software=false an update to your computer's buggy, insecure, and outdated BIOS is available (O14KT19AUS). When you update to this following https://help.ubuntu.com/community/BIOSUpdate how does this improve the situation? For more on BIOS updates and linux, please see https://help.ubuntu.com/community/ReportingBugs#Bug_reporting_etiquette . Please note your current BIOS is already in the Bug Description, so posting this on the old BIOS would not be helpful. Also, you don't have to create a new report. It is most helpful that after the BIOS is updated, if the problem is still reproducible: 1) Please provide the output of the following terminal command (not perform an apport-collect): sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date 2) Please make a comment specifically advising on how this improves the situation. 3) Please mark this report Status Confirmed. If it's not reproducible, please mark this as Invalid. Thank you for your help. ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1651294 Title: [Lenovo IdeaCentre A540] Doesn't poweroff on shutdown To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1651294/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1651294] Re: [Lenovo IdeaCentre A540] Doesn't poweroff on shutdown
Christopher, that issue already existed in kernel 4.2 ; sorry for my previous misleading comment. I did install and boot several older kernels (namely, mainlines 4.3, 4.2, 4.0, 3.19 and 3.13) , but had the same problem with all of them. On older kernels, though, I get an error message similar to this at shutdown: 32.250495] usb 3-1: device not accepting address 3, error -110 42.823143] usb 3-1: device not accepting address 4, error -110 53.395791] usb 3-1: device not accepting address 5, error -110 53.552058] usb usb3-port1: unable to enumerate USB device 53.552058] reboot: System halted Back to kernel 4.9, looking at dmesg in detail (see attachment), I noticed the following (1) [0.00] DMI: LENOVO F0AN/INVALID, BIOS O00KT19AUS 09/30/2014 (2) [0.002774] ACPI Error: [_SB_.PCI0.XHC_.RHUB.SSP3] Namespace lookup failure, AE_NOT_FOUND (20160831/dswload-210) [0.002782] ACPI Exception: AE_NOT_FOUND, During name lookup/catalog (20160831/psobject-227) [0.002927] ACPI Exception: AE_NOT_FOUND, [DSDT] table load failed (20160831/tbxfload-198) [0.003270] ACPI Error: [\_PR_.CPU0] Namespace lookup failure, AE_NOT_FOUND (20160831/dswload-210) (several similar errors follow) (3) [0.069971] DMAR-IR: [Firmware Bug]: ioapic 0 has no mapping iommu, interrupt remapping will be disabled (4) [0.404344] ACPI Error: [PCHS] Namespace lookup failure, AE_NOT_FOUND (20160831/psargs-359) [0.404354] ACPI Error: Method parse/execution failed [\] (Node a0415920), AE_NOT_FOUND (20160831/psparse-543) (several similar errors follow) [0.405105] ACPI: Using PIC for interrupt routing [0.405114] PCI: MMCONFIG for domain [bus 00-ff] at [mem 0xe000-0xefff] (base 0xe000) [0.405146] [Firmware Info]: PCI: MMCONFIG at [mem 0xe000-0xefff] not reserved in ACPI motherboard resources [0.405147] PCI: not using MMCONFIG [0.405148] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug (5) [0.963786] DMAR: Failed to find handle for ACPI object \_SB.PCI0.I2C0 [0.963792] DMAR: Failed to find handle for ACPI object \_SB.PCI0.I2C1 [0.963795] DMAR: Failed to find handle for ACPI object \_SB.PCI0.UA01 [0.963798] DMAR: Failed to find handle for ACPI object \_SB.PCI0.SDHC [0.963810] PCI-DMA: Using software bounce buffering for IO (SWIOTLB) (6) [1.263487] input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input0 [1.263489] ACPI: Power Button [PWRF] [1.263545] GHES: HEST is not enabled! (1) and (3) let me think that this might be a firmware problem (but then, how come the same hardware and BIOS work properly with Windows? could it related to enabling/disabling UEFI, e.g., "csm mode" in Lenovo verbiage ?) (2), (4) and (5) are symptoms of ACPI failure; I found several old tickets where the same error appears, such as: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/668148 https://bugs.launchpad.net/ubuntu/+source/acpi/+bug/551654 http://askubuntu.com/questions/624447/cannot-boot-14-04-ubuntu https://bugzilla.kernel.org/show_bug.cgi?id=43229 (6) I don't know what GHES and HEST mean, some other tickets have been opened and it looks like this is not a bug, but a feature: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1170298 https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1091032 Do you need other information ? Can I help in some way ? ** Bug watch added: Linux Kernel Bug Tracker #43229 http://bugzilla.kernel.org/show_bug.cgi?id=43229 ** Attachment added: "dmesg.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1651294/+attachment/4795038/+files/dmesg.txt ** Tags removed: needs-bisect ** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1651294 Title: [Lenovo IdeaCentre A540] Doesn't poweroff on shutdown To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1651294/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1651294] Re: [Lenovo IdeaCentre A540] Doesn't poweroff on shutdown
Nicolas K, the next step is to fully commit bisect from kernel 4.2 to 4.4 in order to identify the last good kernel commit, followed immediately by the first bad one. This will allow for a more expedited analysis of the root cause of your issue. Could you please do this following https://wiki.ubuntu.com/Kernel/KernelBisection ? Please note, finding adjacent kernel versions is not fully commit bisecting. Also, the kernel release names are irrelevant for the purposes of bisecting. It is most helpful that after the fix commit (not kernel version) has been identified, you then mark this report Status Confirmed. Thank you for your help. ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete ** Tags added: needs-bisect -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1651294 Title: [Lenovo IdeaCentre A540] Doesn't poweroff on shutdown To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1651294/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1651294] Re: [Lenovo IdeaCentre A540] Doesn't poweroff on shutdown
I observe the same behavior with mainline kernel (4.9, commit 69973b830859bc6529a7a0468ba0d80ee5117826). ** Tags added: kernel-bug-exists-upstream ** Tags added: kernel-bug-exists-upstream-4.9 ** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1651294 Title: [Lenovo IdeaCentre A540] Doesn't poweroff on shutdown To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1651294/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1651294] Re: [Lenovo IdeaCentre A540] Doesn't poweroff on shutdown
Nicolas K, thank you for reporting this and helping make Ubuntu better. In order to allow additional upstream developers to examine the issue, at your earliest convenience, could you please test the latest upstream kernel available from http://kernel.ubuntu.com/~kernel-ppa/mainline/?C=N;O=D ? Please keep in mind the following: 1) The one to test is at the very top line at the top of the page (not the daily folder). 2) The release names are irrelevant. 3) The folder time stamps aren't indicative of when the kernel actually was released upstream. 4) Install instructions are available at https://wiki.ubuntu.com/Kernel/MainlineBuilds . If testing on your main install would be inconvenient, one may: 1) Install Ubuntu to a different partition and then test this there. 2) Backup, or clone the primary install. 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. Also, you don't need to apport-collect further unless specifically requested to do so. It is most helpful that after testing of the latest upstream kernel is complete, you mark this report Status Confirmed. Lastly, to keep this issue relevant to upstream, please continue to test the latest mainline kernel as it becomes available. Thank you for your help. ** Description changed: - (Please forgive the length of this post, I hope this may be useful to - other owners of similar computers) - - *Description* - - After switching from Lubuntu 15.10 to Lubuntu 16.04, I cannot shutdown my (Lenovo A540) computer anymore. The Lubuntu logout screen hangs indefinitely and doesn't react to any (well, at least Ctrl+Backspace, Ctrl+Alt+Fn, Ctrl+D and Ctrl+Alt+Del) keyboard key combination. + After switching from Lubuntu 15.10 to Lubuntu 16.04, I cannot shutdown my (Lenovo A540) computer anymore. The Lubuntu logout screen hangs indefinitely and doesn't react to most keyboard combinations. I thus have to press the power button for a few (~5) seconds in order to shut it down. - I didn't have this problem with Lubuntu 15.10, and don't have it with - Windows 10 (dual boot), hence I believe it is software-related. - - *Context* - - Some context may shed some light about my configuration tweaks. - I experienced the following problems with my Lenovo A540: - - 0. I can't see GRUB after installing Lubuntu (true for both Lubuntu - 15.10 and 16.04) - - Doc: https://forums.lenovo.com/t5/ThinkPad-T400-T500-and-newer-T/Unable-to-select-UEFI-Legacy-Boot-in-BIOS-Startup-ThinkPad-T540p/td-p/1670487 - Fix: disable secure boot and then toggle "CSM" depending on the OS I want to use: - * with CSM enabled, windows bootloader is "chosen" (maybe because it is on the first partition) a - * with CSM disabled, GRUB is loaded. I can select between Linux kernel 4.2 or 4.4 (either in regular or recovery mode) or windows, but selecting Windows 10 will give me an error as CSM must be enabled. - - 1. After upgrading to Lubuntu 16.04 (kernel 4.4.0.35), Linux does not boot anymore. - Doc: tracked in https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1463422 - Fix: add "acpi=noirq" boot parameter - Cmd: sudo sed -i s/GRUB_CMDINE_LINUX=""/GRUB_CMDINE_LINUX="acpi=noirq" /etc/default/grub && sudo update-grub - - 2. After upgrading to Lubuntu 16.04, the wifi chipset not recognized - Doc: see for instance http://askubuntu.com/questions/71159/network-manager-says-device-not-managed - Fix: use driver r8723au, not rtl8xxxu - Commands: - su - ; - echo blacklist rtl8xxxu >> /etc/modprobe.d/blacklist.conf; - rmmod rtl8xxxu; - service networking restart; - - - 3. After upgrading to Lubuntu 16.04, the names of network interfaces are not meaningful - Doc: http://askubuntu.com/questions/767786/changing-network-interfaces-name-ubuntu-16-04 - Fix: Add a couple of other boot parameters, "net.iframes=0 biosdevname=0" - Cmd: see point 1) and tweak it a bit - (so, at this point my GRUB_CMDLINE_LINUX is "acpi=noirq net.ifnames=0 biosdevname=0") - - *Note* - - This post relates to: - https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1463422 - [Lenovo IdeaCentre A740]
[Bug 1651294] Re: [Lenovo IdeaCentre A540] Doesn't poweroff on shutdown
** Tags added: bios-outdated-o14kt19aus -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1651294 Title: [Lenovo IdeaCentre A540] Doesn't poweroff on shutdown To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1651294/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
