[Bug 1250051] Re: [Lenovo G780] Backlight switched off at login screen
Christopher, I ran the command and this was the output http://paste.ubuntu.com/6505598/ I dont know how to fix that -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1250051 Title: [Lenovo G780] Backlight switched off at login screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1250051/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1250051] Re: [Lenovo G780] Backlight switched off at login screen
git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git cd linux git checkout 9efa5e50598c5568b0678bb411b239a0b6e9a328 cp /boot/config-`uname -r` .config yes '' | make oldconfig make clean make -j `getconf _NPROCESSORS_ONLN` deb-pkg LOCALVERSION=-custom cd .. sudo dpkg -i *.deb -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1250051 Title: [Lenovo G780] Backlight switched off at login screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1250051/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1250051] Re: [Lenovo G780] Backlight switched off at login screen
uname -a Linux danato-Lenovo-G780 3.12.0-rc4-custom #1 SMP Mon Dec 2 04:30:15 CST 2013 x86_64 x86_64 x86_64 GNU/Linux The backlight ddnt work on that custom either, as you predicted -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1250051 Title: [Lenovo G780] Backlight switched off at login screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1250051/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1250051] Re: [Lenovo G780] Backlight switched off at login screen
Danato, ok now delete the .deb files made earlier and execute the following, which should work if it's the fix commit: cd linux git checkout 2c62333a408f5badd2d2ffd7177f95deeccc5ca4 cp /boot/config-`uname -r` .config yes '' | make oldconfig make clean make -j `getconf _NPROCESSORS_ONLN` deb-pkg LOCALVERSION=-custom cd .. sudo dpkg -i *.deb -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1250051 Title: [Lenovo G780] Backlight switched off at login screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1250051/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1250051] Re: [Lenovo G780] Backlight switched off at login screen
uname -a Linux danato-Lenovo-G780 3.12.0-rc4-custom #2 SMP Mon Dec 2 09:39:52 CST 2013 x86_64 x86_64 x86_64 GNU/Linux Yup, this one works -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1250051 Title: [Lenovo G780] Backlight switched off at login screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1250051/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1250051] Re: [Lenovo G780] Backlight switched off at login screen
** Tags added: reverse-bisect-done -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1250051 Title: [Lenovo G780] Backlight switched off at login screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1250051/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1250051] Re: [Lenovo G780] Backlight switched off at login screen
Danato, I'm going to marked this Triaged given we have identified the
upstream fix commit, the commit is in mainline stable, and would be
backported to Trusty.
** Changed in: linux (Ubuntu)
Status: Incomplete = Triaged
** Changed in: linux (Ubuntu)
Importance: Medium = Low
** Description changed:
Whenever I used to boot on ubuntu, my login screen was too dim, I
wouldn't know my computer was switched on until I increased the
brightness with my keyboard.
The problem is fixed going from http://kernel.ubuntu.com/~kernel-
ppa/mainline/v3.12.1-trusty/ to http://kernel.ubuntu.com/~kernel-
- ppa/mainline/v3.12.2-trusty/ .
+ ppa/mainline/v3.12.2-trusty/ , specifically commit
+ 2c62333a408f5badd2d2ffd7177f95deeccc5ca4 .
WORKAROUND: #!/bin/sh
cap_bright() {
[ ! -d $1 ] return
MAX=$(cat $1/max_brightness)
echo $MAX $1/brightness
}
cap_bright /sys/class/backlight/acpi_video1
cap_bright /sys/class/backlight/intel_backlight
---
ApportVersion: 2.12.5-0ubuntu2.1
Architecture: amd64
AudioDevicesInUse:
USERPID ACCESS COMMAND
/dev/snd/controlC0: danato 1777 F pulseaudio
CRDA:
country MO:
(2402 - 2482 @ 40), (N/A, 20)
(5170 - 5250 @ 40), (3, 23)
(5250 - 5330 @ 40), (3, 23), DFS
(5735 - 5835 @ 40), (3, 30)
DistroRelease: Ubuntu 13.10
InstallationDate: Installed on 2013-11-05 (5 days ago)
InstallationMedia: Ubuntu 13.04 Raring Ringtail - Release amd64 (20130424)
MachineType: LENOVO 20138
MarkForUpload: True
Package: linux (not installed)
ProcFB:
0 nouveaufb
1 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-13-generic
root=UUID=be58180f-8d25-4719-a049-001ce96e4bb2 ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 3.11.0-13.20-generic 3.11.6
RelatedPackageVersions:
linux-restricted-modules-3.11.0-13-generic N/A
linux-backports-modules-3.11.0-13-generic N/A
linux-firmware 1.116
StagingDrivers: rts5139
Tags: saucy staging
Uname: Linux 3.11.0-13-generic x86_64
UpgradeStatus: Upgraded to saucy on 2013-11-06 (5 days ago)
UserGroups: adm cdrom dip lpadmin netdev plugdev sambashare sudo
dmi.bios.date: 12/19/2012
dmi.bios.vendor: LENOVO
dmi.bios.version: 5ECN95WW(V9.00)
dmi.board.asset.tag: No Asset Tag
dmi.board.name: INVALID
dmi.board.vendor: LENOVO
dmi.board.version: 3193WIN8 STD MLT
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Lenovo G780
dmi.modalias:
dmi:bvnLENOVO:bvr5ECN95WW(V9.00):bd12/19/2012:svnLENOVO:pn20138:pvrLenovoG780:rvnLENOVO:rnINVALID:rvr3193WIN8STDMLT:cvnLENOVO:ct10:cvrLenovoG780:
dmi.product.name: 20138
dmi.product.version: Lenovo G780
dmi.sys.vendor: LENOVO
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Title:
[Lenovo G780] Backlight switched off at login screen
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[Bug 1250051] Re: [Lenovo G780] Backlight switched off at login screen
I hope this report wasnt completely in vain, but I reported before it was fixed, so I wouldn't know anyways. Thanks for your time Christopher, at least I learnt a few things doing this -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1250051 Title: [Lenovo G780] Backlight switched off at login screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1250051/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1250051] Re: [Lenovo G780] Backlight switched off at login screen
Danato, could you please test the latest mainline kernel via http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.13-rc2-trusty/ and advise on the results? ** Tags removed: bios-outdated-5ecn96ww ** Tags added: bios-outdated-9.01 ** Tags removed: bios-outdated-9.01 ** Tags added: latest-bios-9.01 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1250051 Title: [Lenovo G780] Backlight switched off at login screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1250051/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1250051] Re: [Lenovo G780] Backlight switched off at login screen
Christopher, that kernel solved the problem. The backlight was working fine on a boot up. But I'll wait for a stable release before I move to a new kernel. Thanks for you advices -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1250051 Title: [Lenovo G780] Backlight switched off at login screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1250051/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1250051] Re: [Lenovo G780] Backlight switched off at login screen
Danato, could you please confirm this issue exists with the latest development release of Ubuntu? ISO images are available from http://cdimage.ubuntu.com/daily-live/current/ . If the issue remains, could you please just make a comment to this. ** Tags added: kernel-fixed-upstream-v3.13-rc2 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1250051 Title: [Lenovo G780] Backlight switched off at login screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1250051/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1250051] Re: [Lenovo G780] Backlight switched off at login screen
lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description:Ubuntu Trusty Tahr (development branch) Release:14.04 Codename: trusty Yes, I still have the same issue with this release -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1250051 Title: [Lenovo G780] Backlight switched off at login screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1250051/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1250051] Re: [Lenovo G780] Backlight switched off at login screen
Danato, so it is known which kernel version brought the fix, could you please test http://kernel.ubuntu.com/~kernel- ppa/mainline/v3.13-rc1-trusty/ and advise to the results? ** Tags added: trusty -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1250051 Title: [Lenovo G780] Backlight switched off at login screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1250051/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1250051] Re: [Lenovo G780] Backlight switched off at login screen
uname -a Linux danato-Lenovo-G780 3.13.0-031300rc1-generic #201311221535 SMP Fri Nov 22 20:36:51 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux it also fixes the issue, I booted up with the maximum brightness -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1250051 Title: [Lenovo G780] Backlight switched off at login screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1250051/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1250051] Re: [Lenovo G780] Backlight switched off at login screen
Danato, could you please test http://kernel.ubuntu.com/~kernel- ppa/mainline/v3.12.2-trusty/ and advise on if this fixes the issue? ** Tags removed: kernel-fixed-upstream-v3.13-rc2 regression-potential ** Tags added: kernel-fixed-upstream-v3.13-rc1 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1250051 Title: [Lenovo G780] Backlight switched off at login screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1250051/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1250051] Re: [Lenovo G780] Backlight switched off at login screen
uname -a Linux danato-Lenovo-G780 3.12.2-031202-generic #201311291538 SMP Fri Nov 29 20:39:07 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux Boot up backlight working here too -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1250051 Title: [Lenovo G780] Backlight switched off at login screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1250051/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1250051] Re: [Lenovo G780] Backlight switched off at login screen
Danato, could you please test http://kernel.ubuntu.com/~kernel- ppa/mainline/v3.12.1-trusty/ and advise to the results? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1250051 Title: [Lenovo G780] Backlight switched off at login screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1250051/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1250051] Re: [Lenovo G780] Backlight switched off at login screen
I already knew that was coming so I started in advance uname -a Linux danato-Lenovo-G780 3.12.1-031201-generic #201311201654 SMP Wed Nov 20 21:54:49 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux The backlight didnt work on boot up here -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1250051 Title: [Lenovo G780] Backlight switched off at login screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1250051/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1250051] Re: [Lenovo G780] Backlight switched off at login screen
** Description changed:
Whenever I used to boot on ubuntu, my login screen was too dim, I
wouldn't know my computer was switched on until I increased the
brightness with my keyboard.
- WORKAROUND: #!/bin/sh
+ The problem is fixed going from http://kernel.ubuntu.com/~kernel-
+ ppa/mainline/v3.12.1-trusty/ to http://kernel.ubuntu.com/~kernel-
+ ppa/mainline/v3.12.2-trusty/ .
+
+ WORKAROUND: #!/bin/sh
cap_bright() {
-[ ! -d $1 ] return
- MAX=$(cat $1/max_brightness)
- echo $MAX $1/brightness
+ [ ! -d $1 ] return
+ MAX=$(cat $1/max_brightness)
+ echo $MAX $1/brightness
}
cap_bright /sys/class/backlight/acpi_video1
cap_bright /sys/class/backlight/intel_backlight
---
ApportVersion: 2.12.5-0ubuntu2.1
Architecture: amd64
AudioDevicesInUse:
USERPID ACCESS COMMAND
/dev/snd/controlC0: danato 1777 F pulseaudio
CRDA:
country MO:
(2402 - 2482 @ 40), (N/A, 20)
(5170 - 5250 @ 40), (3, 23)
(5250 - 5330 @ 40), (3, 23), DFS
(5735 - 5835 @ 40), (3, 30)
DistroRelease: Ubuntu 13.10
InstallationDate: Installed on 2013-11-05 (5 days ago)
InstallationMedia: Ubuntu 13.04 Raring Ringtail - Release amd64 (20130424)
MachineType: LENOVO 20138
MarkForUpload: True
Package: linux (not installed)
ProcFB:
0 nouveaufb
1 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-13-generic
root=UUID=be58180f-8d25-4719-a049-001ce96e4bb2 ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 3.11.0-13.20-generic 3.11.6
RelatedPackageVersions:
linux-restricted-modules-3.11.0-13-generic N/A
linux-backports-modules-3.11.0-13-generic N/A
linux-firmware 1.116
StagingDrivers: rts5139
Tags: saucy staging
Uname: Linux 3.11.0-13-generic x86_64
UpgradeStatus: Upgraded to saucy on 2013-11-06 (5 days ago)
UserGroups: adm cdrom dip lpadmin netdev plugdev sambashare sudo
dmi.bios.date: 12/19/2012
dmi.bios.vendor: LENOVO
dmi.bios.version: 5ECN95WW(V9.00)
dmi.board.asset.tag: No Asset Tag
dmi.board.name: INVALID
dmi.board.vendor: LENOVO
dmi.board.version: 3193WIN8 STD MLT
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Lenovo G780
dmi.modalias:
dmi:bvnLENOVO:bvr5ECN95WW(V9.00):bd12/19/2012:svnLENOVO:pn20138:pvrLenovoG780:rvnLENOVO:rnINVALID:rvr3193WIN8STDMLT:cvnLENOVO:ct10:cvrLenovoG780:
dmi.product.name: 20138
dmi.product.version: Lenovo G780
dmi.sys.vendor: LENOVO
--
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https://bugs.launchpad.net/bugs/1250051
Title:
[Lenovo G780] Backlight switched off at login screen
To manage notifications about this bug go to:
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[Bug 1250051] Re: [Lenovo G780] Backlight switched off at login screen
Danato, your reverse mainline kernel version testing was quite helpful in finding potential commits that fixed this problem. One that stands out is: https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?h=linux-3.12.yid=76641adddc5dc634cb7759dfa95d3d5a545678d1 I'm struggling to easily download the 3.12 branch to compile it, so I'll mark this Triaged for now until either I figure it out, or the fix is released into a Ubuntu kernel. ** Changed in: linux (Ubuntu) Status: Incomplete = Triaged -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1250051 Title: [Lenovo G780] Backlight switched off at login screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1250051/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1250051] Re: [Lenovo G780] Backlight switched off at login screen
** Tags added: cherry-pick -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1250051 Title: [Lenovo G780] Backlight switched off at login screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1250051/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1250051] Re: [Lenovo G780] Backlight switched off at login screen
Danato, ok so in order to verify the previously mentioned commit is indeed the fix, please execute the following in a terminal: git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git cd linux git checkout commit 9efa5e50598c5568b0678bb411b239a0b6e9a328 cp /boot/config-`uname -r` .config yes '' | make oldconfig make clean make -j `getconf _NPROCESSORS_ONLN` deb-pkg LOCALVERSION=-custom cd .. sudo dpkg -i *.deb reboot and this kernel should fail as it is one commit prior. I'm using the following as a reference https://wiki.ubuntu.com/KernelTeam/GitKernelBuild . ** Changed in: linux (Ubuntu) Status: Triaged = Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1250051 Title: [Lenovo G780] Backlight switched off at login screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1250051/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1250051] Re: [Lenovo G780] Backlight switched off at login screen
Thanks for the bios update heads up Christopher I booted into windows and updated my bios, but there was no change as far as I could see, and the same problem specified here persisted sudo dmidecode -s bios-version sudo dmidecode -s bios-release-date 5ECN96WW(V9.01) 03/14/2013 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1250051 Title: [Lenovo G780] Backlight switched off at login screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1250051/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
