Mine was about half in the battery slider and 0 in the AC slider. On Fri, May 26, 2017, 12:11 PM Mario Limonciello <supe...@ubuntu.com> wrote:
> That sounds a little crazy that it can't reproduce in my opinion. When it > "did" reproduce was the brightness at one of the extremes? Eg full high on > shutdown or full low on shutdown? > > On Thu, May 25, 2017, 03:21 Kai-Heng Feng <kai.heng.f...@canonical.com> > wrote: > > > Mario, can you take a look? > > > > A quick summary: > > 1. Boot the system. > > 2. The value systemd-backlight read from intel backlight is 0. > > 3. systemd-backlight restore the value it from > /var/lib/systemd/backlight. > > 4. Brightness value being overwritten to maximum value, 1500. > > > > After I changed the brightness slider in BIOS: > > 1. Boot the system. > > 2. The value systemd-backlight read from intel backlight is a sane value, > > not 0 anymore. > > 3. systemd-backlight restore the value it from > /var/lib/systemd/backlight. > > 4. profit. > > > > Restore defaults in BIOS cannot revert the behavior back to the bad one. > > > > -- > > You received this bug notification because you are subscribed to the bug > > report. > > https://bugs.launchpad.net/bugs/1686268 > > > > Title: > > Backlight brightness level not restored after reboot > > > > To manage notifications about this bug go to: > > > https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1686268/+subscriptions > > > > -- > You received this bug notification because you are subscribed to the bug > report. > https://bugs.launchpad.net/bugs/1686268 > > Title: > Backlight brightness level not restored after reboot > > Status in linux package in Ubuntu: > Confirmed > > Bug description: > I am not sure if this is the right place to report this, so feel free > to move it elsewhere. > > It looks like the systemd-backlight service (/lib/systemd/system > /systemd-backlight@.service) does not restore the brightness level > (although it saves it before shut-down). > > However the following command does restore the saved brightness: > > sudo /lib/systemd/systemd-backlight load backlight:intel_backlight > > As a temporary solution to automate it at boot I am using the > following line added to the root cron: > > @reboot /lib/systemd/systemd-backlight load backlight:intel_backlight > > - Ubuntu 4.10.0-20.22-generic 4.10.8 > - Gnome 3.24 > > Please, let me know if you need more info. Thanks. > --- > ApportVersion: 2.20.4-0ubuntu4 > Architecture: amd64 > AudioDevicesInUse: > USER PID ACCESS COMMAND > /dev/snd/controlC0: dd 1540 F.... pulseaudio > CurrentDesktop: GNOME > DistroRelease: Ubuntu 17.04 > InstallationDate: Installed on 2017-04-12 (13 days ago) > InstallationMedia: Ubuntu-GNOME 17.04 "Zesty Zapus" - Release amd64 > (20170411) > Lsusb: > Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub > Bus 001 Device 002: ID 8087:0a2b Intel Corp. > Bus 001 Device 003: ID 1bcf:2b95 Sunplus Innovation Technology Inc. > Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub > MachineType: Dell Inc. Precision 5520 > Package: linux (not installed) > ProcFB: 0 inteldrmfb > ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.10.0-20-generic.efi.signed > root=/dev/mapper/nvme-ubuntu_gnome ro systemd.restore_state=1 quiet splash > vt.handoff=7 > ProcVersionSignature: Ubuntu 4.10.0-20.22-generic 4.10.8 > RelatedPackageVersions: > linux-restricted-modules-4.10.0-20-generic N/A > linux-backports-modules-4.10.0-20-generic N/A > linux-firmware 1.164 > Tags: zesty > Uname: Linux 4.10.0-20-generic x86_64 > UpgradeStatus: No upgrade log present (probably fresh install) > UserGroups: adm cdrom dip input lpadmin plugdev sambashare sudo > _MarkForUpload: True > dmi.bios.date: 03/29/2017 > dmi.bios.vendor: Dell Inc. > dmi.bios.version: 1.2.4 > dmi.board.name: 06X96V > dmi.board.vendor: Dell Inc. > dmi.board.version: A00 > dmi.chassis.type: 10 > dmi.chassis.vendor: Dell Inc. > dmi.modalias: > dmi:bvnDellInc.:bvr1.2.4:bd03/29/2017:svnDellInc.:pnPrecision5520:pvr:rvnDellInc.:rn06X96V:rvrA00:cvnDellInc.:ct10:cvr: > dmi.product.name: Precision 5520 > dmi.sys.vendor: Dell Inc. > > To manage notifications about this bug go to: > https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1686268/+subscriptions > -- 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/1686268 Title: Backlight brightness level not restored after reboot Status in linux package in Ubuntu: Confirmed Bug description: I am not sure if this is the right place to report this, so feel free to move it elsewhere. It looks like the systemd-backlight service (/lib/systemd/system /systemd-backlight@.service) does not restore the brightness level (although it saves it before shut-down). However the following command does restore the saved brightness: sudo /lib/systemd/systemd-backlight load backlight:intel_backlight As a temporary solution to automate it at boot I am using the following line added to the root cron: @reboot /lib/systemd/systemd-backlight load backlight:intel_backlight - Ubuntu 4.10.0-20.22-generic 4.10.8 - Gnome 3.24 Please, let me know if you need more info. Thanks. --- ApportVersion: 2.20.4-0ubuntu4 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: dd 1540 F.... pulseaudio CurrentDesktop: GNOME DistroRelease: Ubuntu 17.04 InstallationDate: Installed on 2017-04-12 (13 days ago) InstallationMedia: Ubuntu-GNOME 17.04 "Zesty Zapus" - Release amd64 (20170411) Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 002: ID 8087:0a2b Intel Corp. Bus 001 Device 003: ID 1bcf:2b95 Sunplus Innovation Technology Inc. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: Dell Inc. Precision 5520 Package: linux (not installed) ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.10.0-20-generic.efi.signed root=/dev/mapper/nvme-ubuntu_gnome ro systemd.restore_state=1 quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 4.10.0-20.22-generic 4.10.8 RelatedPackageVersions: linux-restricted-modules-4.10.0-20-generic N/A linux-backports-modules-4.10.0-20-generic N/A linux-firmware 1.164 Tags: zesty Uname: Linux 4.10.0-20-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip input lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 03/29/2017 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.2.4 dmi.board.name: 06X96V dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 10 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.2.4:bd03/29/2017:svnDellInc.:pnPrecision5520:pvr:rvnDellInc.:rn06X96V:rvrA00:cvnDellInc.:ct10:cvr: dmi.product.name: Precision 5520 dmi.sys.vendor: Dell Inc. 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