[Kernel-packages] [Bug 1402365] Re: Backlight Bug
I installed Kernel/LTS Enablement Stack on Ubuntu 14.04 and it is working on kernel 3.16.0-36 on Ubuntu 14.04. Is it necessary to bisect between kernel 3.13 to 3.16? -- 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/1402365 Title: Backlight Bug Status in linux package in Ubuntu: Incomplete Bug description: Backlight control does not work, but there are entries in /sys/class/backlight. ls /sys/class/backlight backlight grep -r . /proc/acpi acpi sudo acpidump -o acpidump.txt acpixtract acpidump.txt iasl -d DSDT.dat sudo fwts fwts sudo fwts method fwts_method dmesg | grep 'ACPI: Video' video sudo dmidecode dmidecode.log cat /proc/version version Testing for a work around Reboot with only the kernel parameter acpi_backlight=vendor does not work ls /sys/class/backlight vendorbacklight No such folder /sys/class/backlight/intel_backlight/ Reboot with just kernel parameter video.use_bios_initial_backlight=0 does not work reboot with just kernel parameter video.use_native_backlight=1 does not work WORKAROUND: Install fglrx. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-43-generic 3.13.0-43.72 ProcVersionSignature: Ubuntu 3.13.0-43.72-generic 3.13.11.11 Uname: Linux 3.13.0-43-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.6 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC1: vidya 1832 F pulseaudio /dev/snd/controlC0: vidya 1832 F pulseaudio CurrentDesktop: Unity Date: Sun Dec 14 16:16:27 2014 HibernationDevice: RESUME=UUID=42b35770-926b-43cf-8874-b5452e26b5e5 InstallationDate: Installed on 2014-12-13 (0 days ago) InstallationMedia: Ubuntu 14.04.1 LTS Trusty Tahr - Release amd64 (20140722.2) MachineType: LENOVO 80E3 ProcFB: 0 EFI VGA ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-43-generic.efi.signed root=UUID=7eccd389-f558-421b-928a-541b3f1c16f0 ro quiet splash vt.handoff=7 video.use_native_backlight=1 RelatedPackageVersions: linux-restricted-modules-3.13.0-43-generic N/A linux-backports-modules-3.13.0-43-generic N/A linux-firmware 1.127.10 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/26/2014 dmi.bios.vendor: LENOVO dmi.bios.version: A2CN25WW(V1.07) dmi.board.asset.tag: No Asset Tag dmi.board.name: Lancer 5B2 dmi.board.vendor: LENOVO dmi.board.version: SDK0F82990 WIN dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Lenovo G50-45 dmi.modalias: dmi:bvnLENOVO:bvrA2CN25WW(V1.07):bd08/26/2014:svnLENOVO:pn80E3:pvrLenovoG50-45:rvnLENOVO:rnLancer5B2:rvrSDK0F82990WIN:cvnLENOVO:ct10:cvrLenovoG50-45: dmi.product.name: 80E3 dmi.product.version: Lenovo G50-45 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1402365/+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 1402365] Re: Backlight Bug
Kamalakar Agashe, this bug report is being closed due to your last comment https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1402365/comments/12 regarding this being fixed with an update. For future reference you can manage the status of your own bugs by clicking on the current status in the yellow line and then choosing a new status in the revealed drop down box. You can learn more about bug statuses at https://wiki.ubuntu.com/Bugs/Status. Thank you again for taking the time to report this bug and helping to make Ubuntu better. Please submit any future bugs you may find. ** Changed in: linux (Ubuntu) Status: Incomplete = Invalid -- 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/1402365 Title: Backlight Bug Status in linux package in Ubuntu: Invalid Bug description: Backlight control does not work, but there are entries in /sys/class/backlight. ls /sys/class/backlight backlight grep -r . /proc/acpi acpi sudo acpidump -o acpidump.txt acpixtract acpidump.txt iasl -d DSDT.dat sudo fwts fwts sudo fwts method fwts_method dmesg | grep 'ACPI: Video' video sudo dmidecode dmidecode.log cat /proc/version version Testing for a work around Reboot with only the kernel parameter acpi_backlight=vendor does not work ls /sys/class/backlight vendorbacklight No such folder /sys/class/backlight/intel_backlight/ Reboot with just kernel parameter video.use_bios_initial_backlight=0 does not work reboot with just kernel parameter video.use_native_backlight=1 does not work WORKAROUND: Install fglrx. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-43-generic 3.13.0-43.72 ProcVersionSignature: Ubuntu 3.13.0-43.72-generic 3.13.11.11 Uname: Linux 3.13.0-43-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.6 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC1: vidya 1832 F pulseaudio /dev/snd/controlC0: vidya 1832 F pulseaudio CurrentDesktop: Unity Date: Sun Dec 14 16:16:27 2014 HibernationDevice: RESUME=UUID=42b35770-926b-43cf-8874-b5452e26b5e5 InstallationDate: Installed on 2014-12-13 (0 days ago) InstallationMedia: Ubuntu 14.04.1 LTS Trusty Tahr - Release amd64 (20140722.2) MachineType: LENOVO 80E3 ProcFB: 0 EFI VGA ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-43-generic.efi.signed root=UUID=7eccd389-f558-421b-928a-541b3f1c16f0 ro quiet splash vt.handoff=7 video.use_native_backlight=1 RelatedPackageVersions: linux-restricted-modules-3.13.0-43-generic N/A linux-backports-modules-3.13.0-43-generic N/A linux-firmware 1.127.10 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/26/2014 dmi.bios.vendor: LENOVO dmi.bios.version: A2CN25WW(V1.07) dmi.board.asset.tag: No Asset Tag dmi.board.name: Lancer 5B2 dmi.board.vendor: LENOVO dmi.board.version: SDK0F82990 WIN dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Lenovo G50-45 dmi.modalias: dmi:bvnLENOVO:bvrA2CN25WW(V1.07):bd08/26/2014:svnLENOVO:pn80E3:pvrLenovoG50-45:rvnLENOVO:rnLancer5B2:rvrSDK0F82990WIN:cvnLENOVO:ct10:cvrLenovoG50-45: dmi.product.name: 80E3 dmi.product.version: Lenovo G50-45 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1402365/+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 1402365] Re: Backlight Bug
I tested on Kernel 4.0.0-04-generic and the Bug is fixed. -- 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/1402365 Title: Backlight Bug Status in linux package in Ubuntu: Expired Bug description: Backlight control does not work, but there are entries in /sys/class/backlight. ls /sys/class/backlight backlight grep -r . /proc/acpi acpi sudo acpidump -o acpidump.txt acpixtract acpidump.txt iasl -d DSDT.dat sudo fwts fwts sudo fwts method fwts_method dmesg | grep 'ACPI: Video' video sudo dmidecode dmidecode.log cat /proc/version version Testing for a work around Reboot with only the kernel parameter acpi_backlight=vendor does not work ls /sys/class/backlight vendorbacklight No such folder /sys/class/backlight/intel_backlight/ Reboot with just kernel parameter video.use_bios_initial_backlight=0 does not work reboot with just kernel parameter video.use_native_backlight=1 does not work WORKAROUND: Install fglrx. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-43-generic 3.13.0-43.72 ProcVersionSignature: Ubuntu 3.13.0-43.72-generic 3.13.11.11 Uname: Linux 3.13.0-43-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.6 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC1: vidya 1832 F pulseaudio /dev/snd/controlC0: vidya 1832 F pulseaudio CurrentDesktop: Unity Date: Sun Dec 14 16:16:27 2014 HibernationDevice: RESUME=UUID=42b35770-926b-43cf-8874-b5452e26b5e5 InstallationDate: Installed on 2014-12-13 (0 days ago) InstallationMedia: Ubuntu 14.04.1 LTS Trusty Tahr - Release amd64 (20140722.2) MachineType: LENOVO 80E3 ProcFB: 0 EFI VGA ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-43-generic.efi.signed root=UUID=7eccd389-f558-421b-928a-541b3f1c16f0 ro quiet splash vt.handoff=7 video.use_native_backlight=1 RelatedPackageVersions: linux-restricted-modules-3.13.0-43-generic N/A linux-backports-modules-3.13.0-43-generic N/A linux-firmware 1.127.10 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/26/2014 dmi.bios.vendor: LENOVO dmi.bios.version: A2CN25WW(V1.07) dmi.board.asset.tag: No Asset Tag dmi.board.name: Lancer 5B2 dmi.board.vendor: LENOVO dmi.board.version: SDK0F82990 WIN dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Lenovo G50-45 dmi.modalias: dmi:bvnLENOVO:bvrA2CN25WW(V1.07):bd08/26/2014:svnLENOVO:pn80E3:pvrLenovoG50-45:rvnLENOVO:rnLancer5B2:rvrSDK0F82990WIN:cvnLENOVO:ct10:cvrLenovoG50-45: dmi.product.name: 80E3 dmi.product.version: Lenovo G50-45 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1402365/+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 1402365] Re: Backlight Bug
Kamalakar Agashe, the next step is to fully reverse commit bisect from kernel 3.13 to 4.0 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 ** Changed in: linux (Ubuntu) Status: Expired = 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/1402365 Title: Backlight Bug Status in linux package in Ubuntu: Incomplete Bug description: Backlight control does not work, but there are entries in /sys/class/backlight. ls /sys/class/backlight backlight grep -r . /proc/acpi acpi sudo acpidump -o acpidump.txt acpixtract acpidump.txt iasl -d DSDT.dat sudo fwts fwts sudo fwts method fwts_method dmesg | grep 'ACPI: Video' video sudo dmidecode dmidecode.log cat /proc/version version Testing for a work around Reboot with only the kernel parameter acpi_backlight=vendor does not work ls /sys/class/backlight vendorbacklight No such folder /sys/class/backlight/intel_backlight/ Reboot with just kernel parameter video.use_bios_initial_backlight=0 does not work reboot with just kernel parameter video.use_native_backlight=1 does not work WORKAROUND: Install fglrx. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-43-generic 3.13.0-43.72 ProcVersionSignature: Ubuntu 3.13.0-43.72-generic 3.13.11.11 Uname: Linux 3.13.0-43-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.6 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC1: vidya 1832 F pulseaudio /dev/snd/controlC0: vidya 1832 F pulseaudio CurrentDesktop: Unity Date: Sun Dec 14 16:16:27 2014 HibernationDevice: RESUME=UUID=42b35770-926b-43cf-8874-b5452e26b5e5 InstallationDate: Installed on 2014-12-13 (0 days ago) InstallationMedia: Ubuntu 14.04.1 LTS Trusty Tahr - Release amd64 (20140722.2) MachineType: LENOVO 80E3 ProcFB: 0 EFI VGA ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-43-generic.efi.signed root=UUID=7eccd389-f558-421b-928a-541b3f1c16f0 ro quiet splash vt.handoff=7 video.use_native_backlight=1 RelatedPackageVersions: linux-restricted-modules-3.13.0-43-generic N/A linux-backports-modules-3.13.0-43-generic N/A linux-firmware 1.127.10 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/26/2014 dmi.bios.vendor: LENOVO dmi.bios.version: A2CN25WW(V1.07) dmi.board.asset.tag: No Asset Tag dmi.board.name: Lancer 5B2 dmi.board.vendor: LENOVO dmi.board.version: SDK0F82990 WIN dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Lenovo G50-45 dmi.modalias: dmi:bvnLENOVO:bvrA2CN25WW(V1.07):bd08/26/2014:svnLENOVO:pn80E3:pvrLenovoG50-45:rvnLENOVO:rnLancer5B2:rvrSDK0F82990WIN:cvnLENOVO:ct10:cvrLenovoG50-45: dmi.product.name: 80E3 dmi.product.version: Lenovo G50-45 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1402365/+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 1402365] Re: Backlight Bug
The entry in /sys/class/backlight on Kernel 4.0 is radeon_bl0 Does it help? -- 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/1402365 Title: Backlight Bug Status in linux package in Ubuntu: Incomplete Bug description: Backlight control does not work, but there are entries in /sys/class/backlight. ls /sys/class/backlight backlight grep -r . /proc/acpi acpi sudo acpidump -o acpidump.txt acpixtract acpidump.txt iasl -d DSDT.dat sudo fwts fwts sudo fwts method fwts_method dmesg | grep 'ACPI: Video' video sudo dmidecode dmidecode.log cat /proc/version version Testing for a work around Reboot with only the kernel parameter acpi_backlight=vendor does not work ls /sys/class/backlight vendorbacklight No such folder /sys/class/backlight/intel_backlight/ Reboot with just kernel parameter video.use_bios_initial_backlight=0 does not work reboot with just kernel parameter video.use_native_backlight=1 does not work WORKAROUND: Install fglrx. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-43-generic 3.13.0-43.72 ProcVersionSignature: Ubuntu 3.13.0-43.72-generic 3.13.11.11 Uname: Linux 3.13.0-43-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.6 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC1: vidya 1832 F pulseaudio /dev/snd/controlC0: vidya 1832 F pulseaudio CurrentDesktop: Unity Date: Sun Dec 14 16:16:27 2014 HibernationDevice: RESUME=UUID=42b35770-926b-43cf-8874-b5452e26b5e5 InstallationDate: Installed on 2014-12-13 (0 days ago) InstallationMedia: Ubuntu 14.04.1 LTS Trusty Tahr - Release amd64 (20140722.2) MachineType: LENOVO 80E3 ProcFB: 0 EFI VGA ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-43-generic.efi.signed root=UUID=7eccd389-f558-421b-928a-541b3f1c16f0 ro quiet splash vt.handoff=7 video.use_native_backlight=1 RelatedPackageVersions: linux-restricted-modules-3.13.0-43-generic N/A linux-backports-modules-3.13.0-43-generic N/A linux-firmware 1.127.10 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/26/2014 dmi.bios.vendor: LENOVO dmi.bios.version: A2CN25WW(V1.07) dmi.board.asset.tag: No Asset Tag dmi.board.name: Lancer 5B2 dmi.board.vendor: LENOVO dmi.board.version: SDK0F82990 WIN dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Lenovo G50-45 dmi.modalias: dmi:bvnLENOVO:bvrA2CN25WW(V1.07):bd08/26/2014:svnLENOVO:pn80E3:pvrLenovoG50-45:rvnLENOVO:rnLancer5B2:rvrSDK0F82990WIN:cvnLENOVO:ct10:cvrLenovoG50-45: dmi.product.name: 80E3 dmi.product.version: Lenovo G50-45 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1402365/+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 1402365] Re: Backlight Bug
** Tags added: kernel-fixed-upstream kernel-fixed-upstream-4.0 needs- reverse-bisect -- 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/1402365 Title: Backlight Bug Status in linux package in Ubuntu: Expired Bug description: Backlight control does not work, but there are entries in /sys/class/backlight. ls /sys/class/backlight backlight grep -r . /proc/acpi acpi sudo acpidump -o acpidump.txt acpixtract acpidump.txt iasl -d DSDT.dat sudo fwts fwts sudo fwts method fwts_method dmesg | grep 'ACPI: Video' video sudo dmidecode dmidecode.log cat /proc/version version Testing for a work around Reboot with only the kernel parameter acpi_backlight=vendor does not work ls /sys/class/backlight vendorbacklight No such folder /sys/class/backlight/intel_backlight/ Reboot with just kernel parameter video.use_bios_initial_backlight=0 does not work reboot with just kernel parameter video.use_native_backlight=1 does not work WORKAROUND: Install fglrx. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-43-generic 3.13.0-43.72 ProcVersionSignature: Ubuntu 3.13.0-43.72-generic 3.13.11.11 Uname: Linux 3.13.0-43-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.6 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC1: vidya 1832 F pulseaudio /dev/snd/controlC0: vidya 1832 F pulseaudio CurrentDesktop: Unity Date: Sun Dec 14 16:16:27 2014 HibernationDevice: RESUME=UUID=42b35770-926b-43cf-8874-b5452e26b5e5 InstallationDate: Installed on 2014-12-13 (0 days ago) InstallationMedia: Ubuntu 14.04.1 LTS Trusty Tahr - Release amd64 (20140722.2) MachineType: LENOVO 80E3 ProcFB: 0 EFI VGA ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-43-generic.efi.signed root=UUID=7eccd389-f558-421b-928a-541b3f1c16f0 ro quiet splash vt.handoff=7 video.use_native_backlight=1 RelatedPackageVersions: linux-restricted-modules-3.13.0-43-generic N/A linux-backports-modules-3.13.0-43-generic N/A linux-firmware 1.127.10 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/26/2014 dmi.bios.vendor: LENOVO dmi.bios.version: A2CN25WW(V1.07) dmi.board.asset.tag: No Asset Tag dmi.board.name: Lancer 5B2 dmi.board.vendor: LENOVO dmi.board.version: SDK0F82990 WIN dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Lenovo G50-45 dmi.modalias: dmi:bvnLENOVO:bvrA2CN25WW(V1.07):bd08/26/2014:svnLENOVO:pn80E3:pvrLenovoG50-45:rvnLENOVO:rnLancer5B2:rvrSDK0F82990WIN:cvnLENOVO:ct10:cvrLenovoG50-45: dmi.product.name: 80E3 dmi.product.version: Lenovo G50-45 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1402365/+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 1402365] Re: Backlight Bug
I have downloaded Ubuntu 15.04 64 Bit ISO and running live session. It is working on kernel 3.19.0-15 on Ubuntu 15.04. -- 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/1402365 Title: Backlight Bug Status in linux package in Ubuntu: Incomplete Bug description: Backlight control does not work, but there are entries in /sys/class/backlight. ls /sys/class/backlight backlight grep -r . /proc/acpi acpi sudo acpidump -o acpidump.txt acpixtract acpidump.txt iasl -d DSDT.dat sudo fwts fwts sudo fwts method fwts_method dmesg | grep 'ACPI: Video' video sudo dmidecode dmidecode.log cat /proc/version version Testing for a work around Reboot with only the kernel parameter acpi_backlight=vendor does not work ls /sys/class/backlight vendorbacklight No such folder /sys/class/backlight/intel_backlight/ Reboot with just kernel parameter video.use_bios_initial_backlight=0 does not work reboot with just kernel parameter video.use_native_backlight=1 does not work WORKAROUND: Install fglrx. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-43-generic 3.13.0-43.72 ProcVersionSignature: Ubuntu 3.13.0-43.72-generic 3.13.11.11 Uname: Linux 3.13.0-43-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.6 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC1: vidya 1832 F pulseaudio /dev/snd/controlC0: vidya 1832 F pulseaudio CurrentDesktop: Unity Date: Sun Dec 14 16:16:27 2014 HibernationDevice: RESUME=UUID=42b35770-926b-43cf-8874-b5452e26b5e5 InstallationDate: Installed on 2014-12-13 (0 days ago) InstallationMedia: Ubuntu 14.04.1 LTS Trusty Tahr - Release amd64 (20140722.2) MachineType: LENOVO 80E3 ProcFB: 0 EFI VGA ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-43-generic.efi.signed root=UUID=7eccd389-f558-421b-928a-541b3f1c16f0 ro quiet splash vt.handoff=7 video.use_native_backlight=1 RelatedPackageVersions: linux-restricted-modules-3.13.0-43-generic N/A linux-backports-modules-3.13.0-43-generic N/A linux-firmware 1.127.10 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/26/2014 dmi.bios.vendor: LENOVO dmi.bios.version: A2CN25WW(V1.07) dmi.board.asset.tag: No Asset Tag dmi.board.name: Lancer 5B2 dmi.board.vendor: LENOVO dmi.board.version: SDK0F82990 WIN dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Lenovo G50-45 dmi.modalias: dmi:bvnLENOVO:bvrA2CN25WW(V1.07):bd08/26/2014:svnLENOVO:pn80E3:pvrLenovoG50-45:rvnLENOVO:rnLancer5B2:rvrSDK0F82990WIN:cvnLENOVO:ct10:cvrLenovoG50-45: dmi.product.name: 80E3 dmi.product.version: Lenovo G50-45 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1402365/+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 1402365] Re: Backlight Bug
[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/1402365 Title: Backlight Bug Status in linux package in Ubuntu: Expired Bug description: Backlight control does not work, but there are entries in /sys/class/backlight. ls /sys/class/backlight backlight grep -r . /proc/acpi acpi sudo acpidump -o acpidump.txt acpixtract acpidump.txt iasl -d DSDT.dat sudo fwts fwts sudo fwts method fwts_method dmesg | grep 'ACPI: Video' video sudo dmidecode dmidecode.log cat /proc/version version Testing for a work around Reboot with only the kernel parameter acpi_backlight=vendor does not work ls /sys/class/backlight vendorbacklight No such folder /sys/class/backlight/intel_backlight/ Reboot with just kernel parameter video.use_bios_initial_backlight=0 does not work reboot with just kernel parameter video.use_native_backlight=1 does not work WORKAROUND: Install fglrx. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-43-generic 3.13.0-43.72 ProcVersionSignature: Ubuntu 3.13.0-43.72-generic 3.13.11.11 Uname: Linux 3.13.0-43-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.6 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC1: vidya 1832 F pulseaudio /dev/snd/controlC0: vidya 1832 F pulseaudio CurrentDesktop: Unity Date: Sun Dec 14 16:16:27 2014 HibernationDevice: RESUME=UUID=42b35770-926b-43cf-8874-b5452e26b5e5 InstallationDate: Installed on 2014-12-13 (0 days ago) InstallationMedia: Ubuntu 14.04.1 LTS Trusty Tahr - Release amd64 (20140722.2) MachineType: LENOVO 80E3 ProcFB: 0 EFI VGA ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-43-generic.efi.signed root=UUID=7eccd389-f558-421b-928a-541b3f1c16f0 ro quiet splash vt.handoff=7 video.use_native_backlight=1 RelatedPackageVersions: linux-restricted-modules-3.13.0-43-generic N/A linux-backports-modules-3.13.0-43-generic N/A linux-firmware 1.127.10 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/26/2014 dmi.bios.vendor: LENOVO dmi.bios.version: A2CN25WW(V1.07) dmi.board.asset.tag: No Asset Tag dmi.board.name: Lancer 5B2 dmi.board.vendor: LENOVO dmi.board.version: SDK0F82990 WIN dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Lenovo G50-45 dmi.modalias: dmi:bvnLENOVO:bvrA2CN25WW(V1.07):bd08/26/2014:svnLENOVO:pn80E3:pvrLenovoG50-45:rvnLENOVO:rnLancer5B2:rvrSDK0F82990WIN:cvnLENOVO:ct10:cvrLenovoG50-45: dmi.product.name: 80E3 dmi.product.version: Lenovo G50-45 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1402365/+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 1402365] Re: Backlight Bug
Kamalakar Agashe, could you please test the latest upstream kernel available from the very top line at the top of the page (the release names are irrelevant for testing, and please do not test the daily folder) following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue. If the test 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 bug is fixed in the mainline kernel, please add the following tags: kernel-fixed-upstream kernel-fixed-upstream-VERSION-NUMBER where VERSION-NUMBER is the version number of the kernel you tested exactly shown as: kernel-fixed-upstream-3.19-rc4 This can be done by clicking on the yellow circle with a black pencil icon next to the word Tags located at the bottom of the bug description. If the mainline kernel does not fix this bug, please add the following tags: kernel-bug-exists-upstream kernel-bug-exists-upstream-VERSION-NUMBER Once testing of the upstream kernel is complete, please mark this bug's Status as Confirmed. Please let us know your results. Thank you for your understanding. ** Tags added: latest-bios-1.08 ** Changed in: linux (Ubuntu) Importance: Low = 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/1402365 Title: Backlight Bug Status in linux package in Ubuntu: Incomplete Bug description: Backlight control does not work, but there are entries in /sys/class/backlight. ls /sys/class/backlight backlight grep -r . /proc/acpi acpi sudo acpidump -o acpidump.txt acpixtract acpidump.txt iasl -d DSDT.dat sudo fwts fwts sudo fwts method fwts_method dmesg | grep 'ACPI: Video' video sudo dmidecode dmidecode.log cat /proc/version version Testing for a work around Reboot with only the kernel parameter acpi_backlight=vendor does not work ls /sys/class/backlight vendorbacklight No such folder /sys/class/backlight/intel_backlight/ Reboot with just kernel parameter video.use_bios_initial_backlight=0 does not work reboot with just kernel parameter video.use_native_backlight=1 does not work WORKAROUND: Install fglrx. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-43-generic 3.13.0-43.72 ProcVersionSignature: Ubuntu 3.13.0-43.72-generic 3.13.11.11 Uname: Linux 3.13.0-43-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.6 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC1: vidya 1832 F pulseaudio /dev/snd/controlC0: vidya 1832 F pulseaudio CurrentDesktop: Unity Date: Sun Dec 14 16:16:27 2014 HibernationDevice: RESUME=UUID=42b35770-926b-43cf-8874-b5452e26b5e5 InstallationDate: Installed on 2014-12-13 (0 days ago) InstallationMedia: Ubuntu 14.04.1 LTS Trusty Tahr - Release amd64 (20140722.2) MachineType: LENOVO 80E3 ProcFB: 0 EFI VGA ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-43-generic.efi.signed root=UUID=7eccd389-f558-421b-928a-541b3f1c16f0 ro quiet splash vt.handoff=7 video.use_native_backlight=1 RelatedPackageVersions: linux-restricted-modules-3.13.0-43-generic N/A linux-backports-modules-3.13.0-43-generic N/A linux-firmware 1.127.10 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/26/2014 dmi.bios.vendor: LENOVO dmi.bios.version: A2CN25WW(V1.07) dmi.board.asset.tag: No Asset Tag dmi.board.name: Lancer 5B2 dmi.board.vendor: LENOVO dmi.board.version: SDK0F82990 WIN dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Lenovo G50-45 dmi.modalias: dmi:bvnLENOVO:bvrA2CN25WW(V1.07):bd08/26/2014:svnLENOVO:pn80E3:pvrLenovoG50-45:rvnLENOVO:rnLancer5B2:rvrSDK0F82990WIN:cvnLENOVO:ct10:cvrLenovoG50-45: dmi.product.name: 80E3 dmi.product.version: Lenovo G50-45 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1402365/+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 1402365] Re: Backlight Bug
I have updated the BIOS and there is no change. $ sudo dmidecode -s bios-version sudo dmidecode -s bios-release-date A2CN26WW(V1.08) 10/29/2014 ** 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/1402365 Title: Backlight Bug Status in linux package in Ubuntu: Confirmed Bug description: Backlight control does not work, but there are entries in /sys/class/backlight. ls /sys/class/backlight backlight grep -r . /proc/acpi acpi sudo acpidump -o acpidump.txt acpixtract acpidump.txt iasl -d DSDT.dat sudo fwts fwts sudo fwts method fwts_method dmesg | grep 'ACPI: Video' video sudo dmidecode dmidecode.log cat /proc/version version Testing for a work around Reboot with only the kernel parameter acpi_backlight=vendor does not work ls /sys/class/backlight vendorbacklight No such folder /sys/class/backlight/intel_backlight/ Reboot with just kernel parameter video.use_bios_initial_backlight=0 does not work reboot with just kernel parameter video.use_native_backlight=1 does not work WORKAROUND: Install fglrx. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-43-generic 3.13.0-43.72 ProcVersionSignature: Ubuntu 3.13.0-43.72-generic 3.13.11.11 Uname: Linux 3.13.0-43-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.6 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC1: vidya 1832 F pulseaudio /dev/snd/controlC0: vidya 1832 F pulseaudio CurrentDesktop: Unity Date: Sun Dec 14 16:16:27 2014 HibernationDevice: RESUME=UUID=42b35770-926b-43cf-8874-b5452e26b5e5 InstallationDate: Installed on 2014-12-13 (0 days ago) InstallationMedia: Ubuntu 14.04.1 LTS Trusty Tahr - Release amd64 (20140722.2) MachineType: LENOVO 80E3 ProcFB: 0 EFI VGA ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-43-generic.efi.signed root=UUID=7eccd389-f558-421b-928a-541b3f1c16f0 ro quiet splash vt.handoff=7 video.use_native_backlight=1 RelatedPackageVersions: linux-restricted-modules-3.13.0-43-generic N/A linux-backports-modules-3.13.0-43-generic N/A linux-firmware 1.127.10 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/26/2014 dmi.bios.vendor: LENOVO dmi.bios.version: A2CN25WW(V1.07) dmi.board.asset.tag: No Asset Tag dmi.board.name: Lancer 5B2 dmi.board.vendor: LENOVO dmi.board.version: SDK0F82990 WIN dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Lenovo G50-45 dmi.modalias: dmi:bvnLENOVO:bvrA2CN25WW(V1.07):bd08/26/2014:svnLENOVO:pn80E3:pvrLenovoG50-45:rvnLENOVO:rnLancer5B2:rvrSDK0F82990WIN:cvnLENOVO:ct10:cvrLenovoG50-45: dmi.product.name: 80E3 dmi.product.version: Lenovo G50-45 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1402365/+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 1402365] Re: Backlight Bug
Kamalakar Agashe, thank you for reporting this and helping make Ubuntu better. As per http://support.lenovo.com/us/en/products/laptops-and-netbooks/lenovo-g-series-laptops/g50-45-notebook-lenovo an update to your computer's buggy and outdated BIOS is available (A2CN26WW). If you update to this following https://help.ubuntu.com/community/BIOSUpdate does it change anything? If it doesn't, could you please both specify what happened, and provide the output of the following terminal command: sudo dmidecode -s bios-version sudo dmidecode -s bios-release-date 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. As well, you don't have to create a new bug report. Once the BIOS is updated, then please mark this report Status Confirmed. Thank you for your understanding. ** Description changed: Backlight control does not work, but there are entries in /sys/class/backlight. ls /sys/class/backlight backlight grep -r . /proc/acpi acpi sudo acpidump -o acpidump.txt acpixtract acpidump.txt iasl -d DSDT.dat sudo fwts fwts sudo fwts method fwts_method dmesg | grep 'ACPI: Video' video sudo dmidecode dmidecode.log cat /proc/version version Testing for a work around Reboot with only the kernel parameter acpi_backlight=vendor does not work ls /sys/class/backlight vendorbacklight No such folder /sys/class/backlight/intel_backlight/ Reboot with just kernel parameter video.use_bios_initial_backlight=0 does not work - reboot with just kernel parameter video.use_native_backlight=1 + reboot with just kernel parameter video.use_native_backlight=1 does not work + + WORKAROUND: Install fglrx. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-43-generic 3.13.0-43.72 ProcVersionSignature: Ubuntu 3.13.0-43.72-generic 3.13.11.11 Uname: Linux 3.13.0-43-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.6 Architecture: amd64 AudioDevicesInUse: - USERPID ACCESS COMMAND - /dev/snd/controlC1: vidya 1832 F pulseaudio - /dev/snd/controlC0: vidya 1832 F pulseaudio + USERPID ACCESS COMMAND + /dev/snd/controlC1: vidya 1832 F pulseaudio + /dev/snd/controlC0: vidya 1832 F pulseaudio CurrentDesktop: Unity Date: Sun Dec 14 16:16:27 2014 HibernationDevice: RESUME=UUID=42b35770-926b-43cf-8874-b5452e26b5e5 InstallationDate: Installed on 2014-12-13 (0 days ago) InstallationMedia: Ubuntu 14.04.1 LTS Trusty Tahr - Release amd64 (20140722.2) MachineType: LENOVO 80E3 ProcFB: 0 EFI VGA ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-43-generic.efi.signed root=UUID=7eccd389-f558-421b-928a-541b3f1c16f0 ro quiet splash vt.handoff=7 video.use_native_backlight=1 RelatedPackageVersions: - linux-restricted-modules-3.13.0-43-generic N/A - linux-backports-modules-3.13.0-43-generic N/A - linux-firmware 1.127.10 + linux-restricted-modules-3.13.0-43-generic N/A + linux-backports-modules-3.13.0-43-generic N/A + linux-firmware 1.127.10 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/26/2014 dmi.bios.vendor: LENOVO dmi.bios.version: A2CN25WW(V1.07) dmi.board.asset.tag: No Asset Tag dmi.board.name: Lancer 5B2 dmi.board.vendor: LENOVO dmi.board.version: SDK0F82990 WIN dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Lenovo G50-45 dmi.modalias: dmi:bvnLENOVO:bvrA2CN25WW(V1.07):bd08/26/2014:svnLENOVO:pn80E3:pvrLenovoG50-45:rvnLENOVO:rnLancer5B2:rvrSDK0F82990WIN:cvnLENOVO:ct10:cvrLenovoG50-45: dmi.product.name: 80E3 dmi.product.version: Lenovo G50-45 dmi.sys.vendor: LENOVO ** Changed in: linux (Ubuntu) Importance: Medium = Low ** 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/1402365 Title: Backlight Bug Status in linux package in Ubuntu: Incomplete Bug description: Backlight control does not work, but there are entries in /sys/class/backlight. ls /sys/class/backlight backlight grep -r . /proc/acpi acpi sudo acpidump -o acpidump.txt acpixtract acpidump.txt iasl -d DSDT.dat sudo fwts fwts sudo fwts method fwts_method dmesg | grep 'ACPI: Video' video sudo dmidecode dmidecode.log cat /proc/version version Testing for a work around Reboot with only the kernel parameter acpi_backlight=vendor does not work ls /sys/class/backlight vendorbacklight No such folder /sys/class/backlight/intel_backlight/ Reboot with just kernel parameter video.use_bios_initial_backlight=0
[Kernel-packages] [Bug 1402365] Re: Backlight Bug
I have installed fglrx driver and backlight control is working. -- 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/1402365 Title: Backlight Bug Status in linux package in Ubuntu: Confirmed Bug description: Backlight control does not work, but there are entries in /sys/class/backlight. ls /sys/class/backlight backlight grep -r . /proc/acpi acpi sudo acpidump -o acpidump.txt acpixtract acpidump.txt iasl -d DSDT.dat sudo fwts fwts sudo fwts method fwts_method dmesg | grep 'ACPI: Video' video sudo dmidecode dmidecode.log cat /proc/version version Testing for a work around Reboot with only the kernel parameter acpi_backlight=vendor does not work ls /sys/class/backlight vendorbacklight No such folder /sys/class/backlight/intel_backlight/ Reboot with just kernel parameter video.use_bios_initial_backlight=0 does not work reboot with just kernel parameter video.use_native_backlight=1 does not work ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-43-generic 3.13.0-43.72 ProcVersionSignature: Ubuntu 3.13.0-43.72-generic 3.13.11.11 Uname: Linux 3.13.0-43-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.6 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC1: vidya 1832 F pulseaudio /dev/snd/controlC0: vidya 1832 F pulseaudio CurrentDesktop: Unity Date: Sun Dec 14 16:16:27 2014 HibernationDevice: RESUME=UUID=42b35770-926b-43cf-8874-b5452e26b5e5 InstallationDate: Installed on 2014-12-13 (0 days ago) InstallationMedia: Ubuntu 14.04.1 LTS Trusty Tahr - Release amd64 (20140722.2) MachineType: LENOVO 80E3 ProcFB: 0 EFI VGA ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-43-generic.efi.signed root=UUID=7eccd389-f558-421b-928a-541b3f1c16f0 ro quiet splash vt.handoff=7 video.use_native_backlight=1 RelatedPackageVersions: linux-restricted-modules-3.13.0-43-generic N/A linux-backports-modules-3.13.0-43-generic N/A linux-firmware 1.127.10 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/26/2014 dmi.bios.vendor: LENOVO dmi.bios.version: A2CN25WW(V1.07) dmi.board.asset.tag: No Asset Tag dmi.board.name: Lancer 5B2 dmi.board.vendor: LENOVO dmi.board.version: SDK0F82990 WIN dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Lenovo G50-45 dmi.modalias: dmi:bvnLENOVO:bvrA2CN25WW(V1.07):bd08/26/2014:svnLENOVO:pn80E3:pvrLenovoG50-45:rvnLENOVO:rnLancer5B2:rvrSDK0F82990WIN:cvnLENOVO:ct10:cvrLenovoG50-45: dmi.product.name: 80E3 dmi.product.version: Lenovo G50-45 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1402365/+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 1402365] Re: Backlight Bug
** Changed in: linux (Ubuntu) Importance: Undecided = 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/1402365 Title: Backlight Bug Status in linux package in Ubuntu: Confirmed Bug description: Backlight control does not work, but there are entries in /sys/class/backlight. ls /sys/class/backlight backlight grep -r . /proc/acpi acpi sudo acpidump -o acpidump.txt acpixtract acpidump.txt iasl -d DSDT.dat sudo fwts fwts sudo fwts method fwts_method dmesg | grep 'ACPI: Video' video sudo dmidecode dmidecode.log cat /proc/version version Testing for a work around Reboot with only the kernel parameter acpi_backlight=vendor does not work ls /sys/class/backlight vendorbacklight No such folder /sys/class/backlight/intel_backlight/ Reboot with just kernel parameter video.use_bios_initial_backlight=0 does not work reboot with just kernel parameter video.use_native_backlight=1 does not work ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-43-generic 3.13.0-43.72 ProcVersionSignature: Ubuntu 3.13.0-43.72-generic 3.13.11.11 Uname: Linux 3.13.0-43-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.6 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC1: vidya 1832 F pulseaudio /dev/snd/controlC0: vidya 1832 F pulseaudio CurrentDesktop: Unity Date: Sun Dec 14 16:16:27 2014 HibernationDevice: RESUME=UUID=42b35770-926b-43cf-8874-b5452e26b5e5 InstallationDate: Installed on 2014-12-13 (0 days ago) InstallationMedia: Ubuntu 14.04.1 LTS Trusty Tahr - Release amd64 (20140722.2) MachineType: LENOVO 80E3 ProcFB: 0 EFI VGA ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-43-generic.efi.signed root=UUID=7eccd389-f558-421b-928a-541b3f1c16f0 ro quiet splash vt.handoff=7 video.use_native_backlight=1 RelatedPackageVersions: linux-restricted-modules-3.13.0-43-generic N/A linux-backports-modules-3.13.0-43-generic N/A linux-firmware 1.127.10 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/26/2014 dmi.bios.vendor: LENOVO dmi.bios.version: A2CN25WW(V1.07) dmi.board.asset.tag: No Asset Tag dmi.board.name: Lancer 5B2 dmi.board.vendor: LENOVO dmi.board.version: SDK0F82990 WIN dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Lenovo G50-45 dmi.modalias: dmi:bvnLENOVO:bvrA2CN25WW(V1.07):bd08/26/2014:svnLENOVO:pn80E3:pvrLenovoG50-45:rvnLENOVO:rnLancer5B2:rvrSDK0F82990WIN:cvnLENOVO:ct10:cvrLenovoG50-45: dmi.product.name: 80E3 dmi.product.version: Lenovo G50-45 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1402365/+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
