[Bug 1331442] Re: Screen Brightness keys do not work on Lenovo IdeaPad Z570
There is a better fix queued up for the upstream 4.1 kernel. It consists of these two patches: acpi: video: Allow forcing native backlight on non win8 machines acpi: video: Add enable native backlight quirk for Lenovo Ideapad Z570 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1331442 Title: Screen Brightness keys do not work on Lenovo IdeaPad Z570 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1331442/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1331442] Re: Screen Brightness keys do not work on Lenovo IdeaPad Z570
This might be fixed in the upcoming 3.18 kernel by this patch: Stepan Bujnak: ACPI / video: force vendor backlight on Lenovo Ideapad Z570 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1331442 Title: Screen Brightness keys do not work on Lenovo IdeaPad Z570 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1331442/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1331442] Re: Screen Brightness keys do not work on Lenovo IdeaPad Z570
Hi, I've tested with 3.16.0-031600rc1-generic #201406160035 SMP Mon Jun 16 04:36:15 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux with the same result. The overlay is shown and changes the brightness scale but not the actual screen brightness -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1331442 Title: Screen Brightness keys do not work on Lenovo IdeaPad Z570 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1331442/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1331442] Re: Screen Brightness keys do not work on Lenovo IdeaPad Z570
Hi, I've tested with 3.16.0-031600rc1-generic #201406160035 SMP Mon Jun 16 04:36:15 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux with the same result. The overlay is shown and changes the brightness scale but not the actual screen brightness ** Tags added: kernel-bug-exists-upstream ** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1331442 Title: Screen Brightness keys do not work on Lenovo IdeaPad Z570 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1331442/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1331442] Re: Screen Brightness keys do not work on Lenovo IdeaPad Z570
Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v3.16 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/v3.16-rc1-utopic/ ** 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 Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1331442 Title: Screen Brightness keys do not work on Lenovo IdeaPad Z570 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1331442/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1331442] Re: Screen Brightness keys do not work on Lenovo IdeaPad Z570
I can change the brightness by $ echo 100 | sudo tee /sys/class/backlight/intel_backlight/brightness -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1331442 Title: Screen Brightness keys do not work on Lenovo IdeaPad Z570 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1331442/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
