[Kernel-packages] [Bug 1388817] Re: Backlight brightness problem with Thinkpad T440S
[Expired for linux (Ubuntu) because there has been no activity for 60 days.] ** Changed in: linux (Ubuntu) Status: Incomplete = Expired -- 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/1388817 Title: Backlight brightness problem with Thinkpad T440S Status in linux package in Ubuntu: Expired Bug description: The brightness can't be adjusted smoothly. Only 4 brightnesses can be achieved with Fn keys. WORKAROUND: I add acpi_backlight=vendor kernel parameter according to https://wiki.ubuntu.com/Kernel/Debugging/Backlight. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-39-generic 3.13.0-39.66 ProcVersionSignature: Ubuntu 3.13.0-39.66-generic 3.13.11.8 Uname: Linux 3.13.0-39-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.5 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC0: jing 2280 F pulseaudio /dev/snd/controlC1: jing 2280 F pulseaudio /dev/snd/pcmC1D0p: jing 2280 F...m pulseaudio CurrentDesktop: Unity Date: Mon Nov 3 20:51:08 2014 HibernationDevice: RESUME=UUID=4bfed795-9c38-418e-b097-83b17523308e InstallationDate: Installed on 2014-06-28 (128 days ago) InstallationMedia: Ubuntu 14.04 LTS Trusty Tahr - Release amd64 (20140417) MachineType: LENOVO 20AQA02QHH ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-39-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash acpi_backlight=vendor vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.13.0-39-generic N/A linux-backports-modules-3.13.0-39-generic N/A linux-firmware 1.127.7 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 02/21/2014 dmi.bios.vendor: LENOVO dmi.bios.version: GJET72WW (2.22 ) dmi.board.asset.tag: Not Available dmi.board.name: 20AQA02QHH dmi.board.vendor: LENOVO dmi.board.version: 0B98405 STD dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvrGJET72WW(2.22):bd02/21/2014:svnLENOVO:pn20AQA02QHH:pvrThinkPadT440s:rvnLENOVO:rn20AQA02QHH:rvr0B98405STD:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 20AQA02QHH dmi.product.version: ThinkPad T440s dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1388817/+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
[Kernel-packages] [Bug 1388817] Re: Backlight brightness problem with Thinkpad T440S
v3.18-rc3-vivid build fixes this bug. ** Tags added: kernel-fixed-upstream ** Changed in: linux (Ubuntu) Status: Incomplete = Confirmed -- 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/1388817 Title: Backlight brightness problem with Thinkpad T440S Status in “linux” package in Ubuntu: Confirmed Bug description: The brightness can't be adjusted smoothly. Only 4 brightnesses can be achieved with Fn keys. WORKAROUND: I add acpi_backlight=vendor kernel parameter according to https://wiki.ubuntu.com/Kernel/Debugging/Backlight. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-39-generic 3.13.0-39.66 ProcVersionSignature: Ubuntu 3.13.0-39.66-generic 3.13.11.8 Uname: Linux 3.13.0-39-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.5 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC0: jing 2280 F pulseaudio /dev/snd/controlC1: jing 2280 F pulseaudio /dev/snd/pcmC1D0p: jing 2280 F...m pulseaudio CurrentDesktop: Unity Date: Mon Nov 3 20:51:08 2014 HibernationDevice: RESUME=UUID=4bfed795-9c38-418e-b097-83b17523308e InstallationDate: Installed on 2014-06-28 (128 days ago) InstallationMedia: Ubuntu 14.04 LTS Trusty Tahr - Release amd64 (20140417) MachineType: LENOVO 20AQA02QHH ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-39-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash acpi_backlight=vendor vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.13.0-39-generic N/A linux-backports-modules-3.13.0-39-generic N/A linux-firmware 1.127.7 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 02/21/2014 dmi.bios.vendor: LENOVO dmi.bios.version: GJET72WW (2.22 ) dmi.board.asset.tag: Not Available dmi.board.name: 20AQA02QHH dmi.board.vendor: LENOVO dmi.board.version: 0B98405 STD dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvrGJET72WW(2.22):bd02/21/2014:svnLENOVO:pn20AQA02QHH:pvrThinkPadT440s:rvnLENOVO:rn20AQA02QHH:rvr0B98405STD:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 20AQA02QHH dmi.product.version: ThinkPad T440s dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1388817/+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
[Kernel-packages] [Bug 1388817] Re: Backlight brightness problem with Thinkpad T440S
Jingguo Yao, the next step is to fully reverse commit bisect from kernel 3.13 to 3.18-rc3 in order to identify the last bad commit, followed immediately by the first good one. Once this commit has been identified, then it may be reviewed as a candidate for backporting into your release. Could you please do this following https://wiki.ubuntu.com/Kernel/KernelBisection#How_do_I_reverse_bisect_the_upstream_kernel.3F ? Please note, finding adjacent kernel versions is not fully commit bisecting. Thank you for your understanding. Helpful bug reporting tips: https://wiki.ubuntu.com/ReportingBugs ** Tags added: kernel-fixed-upstream-3.18-rc3 needs-reverse-bisect ** Changed in: linux (Ubuntu) Status: Confirmed = 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/1388817 Title: Backlight brightness problem with Thinkpad T440S Status in “linux” package in Ubuntu: Incomplete Bug description: The brightness can't be adjusted smoothly. Only 4 brightnesses can be achieved with Fn keys. WORKAROUND: I add acpi_backlight=vendor kernel parameter according to https://wiki.ubuntu.com/Kernel/Debugging/Backlight. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-39-generic 3.13.0-39.66 ProcVersionSignature: Ubuntu 3.13.0-39.66-generic 3.13.11.8 Uname: Linux 3.13.0-39-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.5 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC0: jing 2280 F pulseaudio /dev/snd/controlC1: jing 2280 F pulseaudio /dev/snd/pcmC1D0p: jing 2280 F...m pulseaudio CurrentDesktop: Unity Date: Mon Nov 3 20:51:08 2014 HibernationDevice: RESUME=UUID=4bfed795-9c38-418e-b097-83b17523308e InstallationDate: Installed on 2014-06-28 (128 days ago) InstallationMedia: Ubuntu 14.04 LTS Trusty Tahr - Release amd64 (20140417) MachineType: LENOVO 20AQA02QHH ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-39-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash acpi_backlight=vendor vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.13.0-39-generic N/A linux-backports-modules-3.13.0-39-generic N/A linux-firmware 1.127.7 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 02/21/2014 dmi.bios.vendor: LENOVO dmi.bios.version: GJET72WW (2.22 ) dmi.board.asset.tag: Not Available dmi.board.name: 20AQA02QHH dmi.board.vendor: LENOVO dmi.board.version: 0B98405 STD dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvrGJET72WW(2.22):bd02/21/2014:svnLENOVO:pn20AQA02QHH:pvrThinkPadT440s:rvnLENOVO:rn20AQA02QHH:rvr0B98405STD:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 20AQA02QHH dmi.product.version: ThinkPad T440s dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1388817/+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
[Kernel-packages] [Bug 1388817] Re: Backlight brightness problem with Thinkpad T440S
Since I can't correct my typo, I add my comment one more time. With the use of v3.18-rc3-vivid, the following problems still exist: 1. After every boot, the brightness is set to maximum. 2. The brightness can't be adjusted smoothly. Only 4 brightnesses can be achieved with Fn keys. 3. After recovering from dimming, the brightness is set to maximum. 4. The following error message is printed during the boot: [ 12.843633] thinkpad_acpi: Unsupported brightness interface, please contact ibm-acpi-de...@lists.sourceforge.net -- 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/1388817 Title: Backlight brightness problem with Thinkpad T440S Status in “linux” package in Ubuntu: Incomplete Bug description: The brightness can't be adjusted smoothly. Only 4 brightnesses can be achieved with Fn keys. WORKAROUND: I add acpi_backlight=vendor kernel parameter according to https://wiki.ubuntu.com/Kernel/Debugging/Backlight. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-39-generic 3.13.0-39.66 ProcVersionSignature: Ubuntu 3.13.0-39.66-generic 3.13.11.8 Uname: Linux 3.13.0-39-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.5 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC0: jing 2280 F pulseaudio /dev/snd/controlC1: jing 2280 F pulseaudio /dev/snd/pcmC1D0p: jing 2280 F...m pulseaudio CurrentDesktop: Unity Date: Mon Nov 3 20:51:08 2014 HibernationDevice: RESUME=UUID=4bfed795-9c38-418e-b097-83b17523308e InstallationDate: Installed on 2014-06-28 (128 days ago) InstallationMedia: Ubuntu 14.04 LTS Trusty Tahr - Release amd64 (20140417) MachineType: LENOVO 20AQA02QHH ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-39-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash acpi_backlight=vendor vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.13.0-39-generic N/A linux-backports-modules-3.13.0-39-generic N/A linux-firmware 1.127.7 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 02/21/2014 dmi.bios.vendor: LENOVO dmi.bios.version: GJET72WW (2.22 ) dmi.board.asset.tag: Not Available dmi.board.name: 20AQA02QHH dmi.board.vendor: LENOVO dmi.board.version: 0B98405 STD dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvrGJET72WW(2.22):bd02/21/2014:svnLENOVO:pn20AQA02QHH:pvrThinkPadT440s:rvnLENOVO:rn20AQA02QHH:rvr0B98405STD:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 20AQA02QHH dmi.product.version: ThinkPad T440s dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1388817/+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
[Kernel-packages] [Bug 1388817] Re: Backlight brightness problem with Thinkpad T440S
With the use of , the following problems still exists: 1. After every boot, the brightness is set to maximum. 2. The brightness can't be adjusted smoothly. Only 4 brightnesses can be achieved with Fn keys. 3. After recovering from dimming, the brightness is set to maximum. 4. The following error message is printed during the boot: [ 12.843633] thinkpad_acpi: Unsupported brightness interface, please contact ibm-acpi-de...@lists.sourceforge.net ** Tags added: kernel-bug-exists-upstream -- 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/1388817 Title: Backlight brightness problem with Thinkpad T440S Status in “linux” package in Ubuntu: Incomplete Bug description: The brightness can't be adjusted smoothly. Only 4 brightnesses can be achieved with Fn keys. WORKAROUND: I add acpi_backlight=vendor kernel parameter according to https://wiki.ubuntu.com/Kernel/Debugging/Backlight. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-39-generic 3.13.0-39.66 ProcVersionSignature: Ubuntu 3.13.0-39.66-generic 3.13.11.8 Uname: Linux 3.13.0-39-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.5 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC0: jing 2280 F pulseaudio /dev/snd/controlC1: jing 2280 F pulseaudio /dev/snd/pcmC1D0p: jing 2280 F...m pulseaudio CurrentDesktop: Unity Date: Mon Nov 3 20:51:08 2014 HibernationDevice: RESUME=UUID=4bfed795-9c38-418e-b097-83b17523308e InstallationDate: Installed on 2014-06-28 (128 days ago) InstallationMedia: Ubuntu 14.04 LTS Trusty Tahr - Release amd64 (20140417) MachineType: LENOVO 20AQA02QHH ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-39-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash acpi_backlight=vendor vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.13.0-39-generic N/A linux-backports-modules-3.13.0-39-generic N/A linux-firmware 1.127.7 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 02/21/2014 dmi.bios.vendor: LENOVO dmi.bios.version: GJET72WW (2.22 ) dmi.board.asset.tag: Not Available dmi.board.name: 20AQA02QHH dmi.board.vendor: LENOVO dmi.board.version: 0B98405 STD dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvrGJET72WW(2.22):bd02/21/2014:svnLENOVO:pn20AQA02QHH:pvrThinkPadT440s:rvnLENOVO:rn20AQA02QHH:rvr0B98405STD:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 20AQA02QHH dmi.product.version: ThinkPad T440s dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1388817/+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
[Kernel-packages] [Bug 1388817] Re: Backlight brightness problem with Thinkpad T440S
Please ignore my #4 and #5 comments. With the use of v3.18-rc3-vivid, for the following problems: 1. After every boot, the brightness is set to maximum. 2. The brightness can't be adjusted smoothly. Only 4 brightnesses can be achieved with Fn keys. 3. After recovering from screen dimming and system suspend, the brightness is set to maximum. 4. The following error message is printed during the boot: thinkpad_acpi: Unsupported brightness interface, please contact ibm-acpi-de...@lists.sourceforge.net 2 and 3 are fixed. But 1 and 4 still exist. ** Tags removed: kernel-bug-exists-upstream -- 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/1388817 Title: Backlight brightness problem with Thinkpad T440S Status in “linux” package in Ubuntu: Incomplete Bug description: The brightness can't be adjusted smoothly. Only 4 brightnesses can be achieved with Fn keys. WORKAROUND: I add acpi_backlight=vendor kernel parameter according to https://wiki.ubuntu.com/Kernel/Debugging/Backlight. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-39-generic 3.13.0-39.66 ProcVersionSignature: Ubuntu 3.13.0-39.66-generic 3.13.11.8 Uname: Linux 3.13.0-39-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.5 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC0: jing 2280 F pulseaudio /dev/snd/controlC1: jing 2280 F pulseaudio /dev/snd/pcmC1D0p: jing 2280 F...m pulseaudio CurrentDesktop: Unity Date: Mon Nov 3 20:51:08 2014 HibernationDevice: RESUME=UUID=4bfed795-9c38-418e-b097-83b17523308e InstallationDate: Installed on 2014-06-28 (128 days ago) InstallationMedia: Ubuntu 14.04 LTS Trusty Tahr - Release amd64 (20140417) MachineType: LENOVO 20AQA02QHH ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-39-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash acpi_backlight=vendor vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.13.0-39-generic N/A linux-backports-modules-3.13.0-39-generic N/A linux-firmware 1.127.7 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 02/21/2014 dmi.bios.vendor: LENOVO dmi.bios.version: GJET72WW (2.22 ) dmi.board.asset.tag: Not Available dmi.board.name: 20AQA02QHH dmi.board.vendor: LENOVO dmi.board.version: 0B98405 STD dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvrGJET72WW(2.22):bd02/21/2014:svnLENOVO:pn20AQA02QHH:pvrThinkPadT440s:rvnLENOVO:rn20AQA02QHH:rvr0B98405STD:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 20AQA02QHH dmi.product.version: ThinkPad T440s dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1388817/+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
[Kernel-packages] [Bug 1388817] Re: Backlight brightness problem with Thinkpad T440S
I don't know which tag I should add since not all of my problems are fixed by v3.18-rc3-vivid. -- 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/1388817 Title: Backlight brightness problem with Thinkpad T440S Status in “linux” package in Ubuntu: Incomplete Bug description: The brightness can't be adjusted smoothly. Only 4 brightnesses can be achieved with Fn keys. WORKAROUND: I add acpi_backlight=vendor kernel parameter according to https://wiki.ubuntu.com/Kernel/Debugging/Backlight. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-39-generic 3.13.0-39.66 ProcVersionSignature: Ubuntu 3.13.0-39.66-generic 3.13.11.8 Uname: Linux 3.13.0-39-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.5 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC0: jing 2280 F pulseaudio /dev/snd/controlC1: jing 2280 F pulseaudio /dev/snd/pcmC1D0p: jing 2280 F...m pulseaudio CurrentDesktop: Unity Date: Mon Nov 3 20:51:08 2014 HibernationDevice: RESUME=UUID=4bfed795-9c38-418e-b097-83b17523308e InstallationDate: Installed on 2014-06-28 (128 days ago) InstallationMedia: Ubuntu 14.04 LTS Trusty Tahr - Release amd64 (20140417) MachineType: LENOVO 20AQA02QHH ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-39-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash acpi_backlight=vendor vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.13.0-39-generic N/A linux-backports-modules-3.13.0-39-generic N/A linux-firmware 1.127.7 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 02/21/2014 dmi.bios.vendor: LENOVO dmi.bios.version: GJET72WW (2.22 ) dmi.board.asset.tag: Not Available dmi.board.name: 20AQA02QHH dmi.board.vendor: LENOVO dmi.board.version: 0B98405 STD dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvrGJET72WW(2.22):bd02/21/2014:svnLENOVO:pn20AQA02QHH:pvrThinkPadT440s:rvnLENOVO:rn20AQA02QHH:rvr0B98405STD:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 20AQA02QHH dmi.product.version: ThinkPad T440s dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1388817/+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
[Kernel-packages] [Bug 1388817] Re: Backlight brightness problem with Thinkpad T440S
Jingguo Yao, the scope of this report is only The brightness can't be adjusted smoothly. Only 4 brightnesses can be achieved with Fn keys. We don't do catchalls or dogpiles here. If you want your other three issues addressed, file one report per problem. -- 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/1388817 Title: Backlight brightness problem with Thinkpad T440S Status in “linux” package in Ubuntu: Incomplete Bug description: The brightness can't be adjusted smoothly. Only 4 brightnesses can be achieved with Fn keys. WORKAROUND: I add acpi_backlight=vendor kernel parameter according to https://wiki.ubuntu.com/Kernel/Debugging/Backlight. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-39-generic 3.13.0-39.66 ProcVersionSignature: Ubuntu 3.13.0-39.66-generic 3.13.11.8 Uname: Linux 3.13.0-39-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.5 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC0: jing 2280 F pulseaudio /dev/snd/controlC1: jing 2280 F pulseaudio /dev/snd/pcmC1D0p: jing 2280 F...m pulseaudio CurrentDesktop: Unity Date: Mon Nov 3 20:51:08 2014 HibernationDevice: RESUME=UUID=4bfed795-9c38-418e-b097-83b17523308e InstallationDate: Installed on 2014-06-28 (128 days ago) InstallationMedia: Ubuntu 14.04 LTS Trusty Tahr - Release amd64 (20140417) MachineType: LENOVO 20AQA02QHH ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-39-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash acpi_backlight=vendor vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.13.0-39-generic N/A linux-backports-modules-3.13.0-39-generic N/A linux-firmware 1.127.7 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 02/21/2014 dmi.bios.vendor: LENOVO dmi.bios.version: GJET72WW (2.22 ) dmi.board.asset.tag: Not Available dmi.board.name: 20AQA02QHH dmi.board.vendor: LENOVO dmi.board.version: 0B98405 STD dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvrGJET72WW(2.22):bd02/21/2014:svnLENOVO:pn20AQA02QHH:pvrThinkPadT440s:rvnLENOVO:rn20AQA02QHH:rvr0B98405STD:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 20AQA02QHH dmi.product.version: ThinkPad T440s dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1388817/+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
[Kernel-packages] [Bug 1388817] Re: Backlight brightness problem with Thinkpad T440S
** Description changed: At the beginning, I have the following four problems: 1. After every boot, the brightness is set to maximum. 2. The brightness can't be adjusted smoothly. Only 4 brightnesses can be achieved with Fn keys. - 3. After recovering from dimming, the brightness is set to maximum. + 3. After recovering from screen dimming and system suspend, the brightness is set to maximum. 4. The following error message is printed during the boot: [ 12.843633] thinkpad_acpi: Unsupported brightness interface, please contact ibm-acpi-de...@lists.sourceforge.net The following workaround fixes 1 for me. http://askubuntu.com/questions/151651/brightness-is-reset-to-maximum-on-every-restart I add acpi_backlight=vendor kernel parameter according to https://wiki.ubuntu.com/Kernel/Debugging/Backlight. This fixes 2 and 3 for me. But 4 still exists. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-39-generic 3.13.0-39.66 ProcVersionSignature: Ubuntu 3.13.0-39.66-generic 3.13.11.8 Uname: Linux 3.13.0-39-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.5 Architecture: amd64 AudioDevicesInUse: - USERPID ACCESS COMMAND - /dev/snd/controlC0: jing 2280 F pulseaudio - /dev/snd/controlC1: jing 2280 F pulseaudio - /dev/snd/pcmC1D0p: jing 2280 F...m pulseaudio + USERPID ACCESS COMMAND + /dev/snd/controlC0: jing 2280 F pulseaudio + /dev/snd/controlC1: jing 2280 F pulseaudio + /dev/snd/pcmC1D0p: jing 2280 F...m pulseaudio CurrentDesktop: Unity Date: Mon Nov 3 20:51:08 2014 HibernationDevice: RESUME=UUID=4bfed795-9c38-418e-b097-83b17523308e InstallationDate: Installed on 2014-06-28 (128 days ago) InstallationMedia: Ubuntu 14.04 LTS Trusty Tahr - Release amd64 (20140417) MachineType: LENOVO 20AQA02QHH ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-39-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash acpi_backlight=vendor vt.handoff=7 RelatedPackageVersions: - linux-restricted-modules-3.13.0-39-generic N/A - linux-backports-modules-3.13.0-39-generic N/A - linux-firmware 1.127.7 + linux-restricted-modules-3.13.0-39-generic N/A + linux-backports-modules-3.13.0-39-generic N/A + linux-firmware 1.127.7 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 02/21/2014 dmi.bios.vendor: LENOVO dmi.bios.version: GJET72WW (2.22 ) dmi.board.asset.tag: Not Available dmi.board.name: 20AQA02QHH dmi.board.vendor: LENOVO dmi.board.version: 0B98405 STD dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvrGJET72WW(2.22):bd02/21/2014:svnLENOVO:pn20AQA02QHH:pvrThinkPadT440s:rvnLENOVO:rn20AQA02QHH:rvr0B98405STD:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 20AQA02QHH dmi.product.version: ThinkPad T440s dmi.sys.vendor: LENOVO -- 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/1388817 Title: Backlight brightness problem with Thinkpad T440S Status in “linux” package in Ubuntu: Confirmed Bug description: At the beginning, I have the following four problems: 1. After every boot, the brightness is set to maximum. 2. The brightness can't be adjusted smoothly. Only 4 brightnesses can be achieved with Fn keys. 3. After recovering from screen dimming and system suspend, the brightness is set to maximum. 4. The following error message is printed during the boot: [ 12.843633] thinkpad_acpi: Unsupported brightness interface, please contact ibm-acpi-de...@lists.sourceforge.net The following workaround fixes 1 for me. http://askubuntu.com/questions/151651/brightness-is-reset-to-maximum-on-every-restart I add acpi_backlight=vendor kernel parameter according to https://wiki.ubuntu.com/Kernel/Debugging/Backlight. This fixes 2 and 3 for me. But 4 still exists. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-39-generic 3.13.0-39.66 ProcVersionSignature: Ubuntu 3.13.0-39.66-generic 3.13.11.8 Uname: Linux 3.13.0-39-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.5 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC0: jing 2280 F pulseaudio /dev/snd/controlC1: jing 2280 F pulseaudio /dev/snd/pcmC1D0p: jing 2280 F...m pulseaudio CurrentDesktop: Unity Date: Mon Nov 3 20:51:08 2014 HibernationDevice: RESUME=UUID=4bfed795-9c38-418e-b097-83b17523308e InstallationDate: Installed on 2014-06-28 (128 days ago) InstallationMedia: Ubuntu 14.04 LTS Trusty Tahr - Release amd64 (20140417) MachineType: LENOVO 20AQA02QHH ProcFB: 0 inteldrmfb ProcKernelCmdLine:
[Kernel-packages] [Bug 1388817] Re: Backlight brightness problem with Thinkpad T440S
Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v3.18 kernel[0]. If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'. If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'. Once testing of the upstream kernel is complete, please mark this bug as Confirmed. Thanks in advance. [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.18-rc3-vivid/ ** Changed in: linux (Ubuntu) Importance: Undecided = Medium ** Changed in: linux (Ubuntu) Status: Confirmed = 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/1388817 Title: Backlight brightness problem with Thinkpad T440S Status in “linux” package in Ubuntu: Incomplete Bug description: At the beginning, I have the following four problems: 1. After every boot, the brightness is set to maximum. 2. The brightness can't be adjusted smoothly. Only 4 brightnesses can be achieved with Fn keys. 3. After recovering from screen dimming and system suspend, the brightness is set to maximum. 4. The following error message is printed during the boot: [ 12.843633] thinkpad_acpi: Unsupported brightness interface, please contact ibm-acpi-de...@lists.sourceforge.net The following workaround fixes 1 for me. http://askubuntu.com/questions/151651/brightness-is-reset-to-maximum-on-every-restart I add acpi_backlight=vendor kernel parameter according to https://wiki.ubuntu.com/Kernel/Debugging/Backlight. This fixes 2 and 3 for me. But 4 still exists. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-39-generic 3.13.0-39.66 ProcVersionSignature: Ubuntu 3.13.0-39.66-generic 3.13.11.8 Uname: Linux 3.13.0-39-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.5 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC0: jing 2280 F pulseaudio /dev/snd/controlC1: jing 2280 F pulseaudio /dev/snd/pcmC1D0p: jing 2280 F...m pulseaudio CurrentDesktop: Unity Date: Mon Nov 3 20:51:08 2014 HibernationDevice: RESUME=UUID=4bfed795-9c38-418e-b097-83b17523308e InstallationDate: Installed on 2014-06-28 (128 days ago) InstallationMedia: Ubuntu 14.04 LTS Trusty Tahr - Release amd64 (20140417) MachineType: LENOVO 20AQA02QHH ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-39-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash acpi_backlight=vendor vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.13.0-39-generic N/A linux-backports-modules-3.13.0-39-generic N/A linux-firmware 1.127.7 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 02/21/2014 dmi.bios.vendor: LENOVO dmi.bios.version: GJET72WW (2.22 ) dmi.board.asset.tag: Not Available dmi.board.name: 20AQA02QHH dmi.board.vendor: LENOVO dmi.board.version: 0B98405 STD dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvrGJET72WW(2.22):bd02/21/2014:svnLENOVO:pn20AQA02QHH:pvrThinkPadT440s:rvnLENOVO:rn20AQA02QHH:rvr0B98405STD:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 20AQA02QHH dmi.product.version: ThinkPad T440s dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1388817/+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
[Kernel-packages] [Bug 1388817] Re: Backlight brightness problem with Thinkpad T440S
** Tags added: bios-outdated-2.28 ** Description changed: At the beginning, I have the following four problems: - 1. After every boot, the brightness is set to maximum. - 2. The brightness can't be adjusted smoothly. Only 4 brightnesses can be achieved with Fn keys. - 3. After recovering from screen dimming and system suspend, the brightness is set to maximum. - 4. The following error message is printed during the boot: - [ 12.843633] thinkpad_acpi: Unsupported brightness interface, please contact ibm-acpi-de...@lists.sourceforge.net + The brightness can't be adjusted smoothly. Only 4 brightnesses can be + achieved with Fn keys. - The following workaround fixes 1 for me. - http://askubuntu.com/questions/151651/brightness-is-reset-to-maximum-on-every-restart - - I add acpi_backlight=vendor kernel parameter according to - https://wiki.ubuntu.com/Kernel/Debugging/Backlight. This fixes 2 and 3 - for me. - - But 4 still exists. + WORKAROUND: I add acpi_backlight=vendor kernel parameter according to + https://wiki.ubuntu.com/Kernel/Debugging/Backlight. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-39-generic 3.13.0-39.66 ProcVersionSignature: Ubuntu 3.13.0-39.66-generic 3.13.11.8 Uname: Linux 3.13.0-39-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.5 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC0: jing 2280 F pulseaudio /dev/snd/controlC1: jing 2280 F pulseaudio /dev/snd/pcmC1D0p: jing 2280 F...m pulseaudio CurrentDesktop: Unity Date: Mon Nov 3 20:51:08 2014 HibernationDevice: RESUME=UUID=4bfed795-9c38-418e-b097-83b17523308e InstallationDate: Installed on 2014-06-28 (128 days ago) InstallationMedia: Ubuntu 14.04 LTS Trusty Tahr - Release amd64 (20140417) MachineType: LENOVO 20AQA02QHH ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-39-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash acpi_backlight=vendor vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.13.0-39-generic N/A linux-backports-modules-3.13.0-39-generic N/A linux-firmware 1.127.7 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 02/21/2014 dmi.bios.vendor: LENOVO dmi.bios.version: GJET72WW (2.22 ) dmi.board.asset.tag: Not Available dmi.board.name: 20AQA02QHH dmi.board.vendor: LENOVO dmi.board.version: 0B98405 STD dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvrGJET72WW(2.22):bd02/21/2014:svnLENOVO:pn20AQA02QHH:pvrThinkPadT440s:rvnLENOVO:rn20AQA02QHH:rvr0B98405STD:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 20AQA02QHH dmi.product.version: ThinkPad T440s dmi.sys.vendor: LENOVO ** Description changed: - At the beginning, I have the following four problems: - The brightness can't be adjusted smoothly. Only 4 brightnesses can be achieved with Fn keys. WORKAROUND: I add acpi_backlight=vendor kernel parameter according to https://wiki.ubuntu.com/Kernel/Debugging/Backlight. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-39-generic 3.13.0-39.66 ProcVersionSignature: Ubuntu 3.13.0-39.66-generic 3.13.11.8 Uname: Linux 3.13.0-39-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.5 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC0: jing 2280 F pulseaudio /dev/snd/controlC1: jing 2280 F pulseaudio /dev/snd/pcmC1D0p: jing 2280 F...m pulseaudio CurrentDesktop: Unity Date: Mon Nov 3 20:51:08 2014 HibernationDevice: RESUME=UUID=4bfed795-9c38-418e-b097-83b17523308e InstallationDate: Installed on 2014-06-28 (128 days ago) InstallationMedia: Ubuntu 14.04 LTS Trusty Tahr - Release amd64 (20140417) MachineType: LENOVO 20AQA02QHH ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-39-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash acpi_backlight=vendor vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.13.0-39-generic N/A linux-backports-modules-3.13.0-39-generic N/A linux-firmware 1.127.7 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 02/21/2014 dmi.bios.vendor: LENOVO dmi.bios.version: GJET72WW (2.22 ) dmi.board.asset.tag: Not Available dmi.board.name: 20AQA02QHH dmi.board.vendor: LENOVO dmi.board.version: 0B98405 STD dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvrGJET72WW(2.22):bd02/21/2014:svnLENOVO:pn20AQA02QHH:pvrThinkPadT440s:rvnLENOVO:rn20AQA02QHH:rvr0B98405STD:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name:
