[Kernel-packages] [Bug 1381625] Re: Adjust brightness to lowest value caused screen whole black

2015-11-18 Thread Martin Pitt
** Changed in: unity-settings-daemon (Ubuntu) Status: Won't Fix => In Progress ** Also affects: linux (Ubuntu Trusty) Importance: Undecided Status: New ** Also affects: unity-settings-daemon (Ubuntu Trusty) Importance: Undecided Status: New ** No longer affects: linux

[Kernel-packages] [Bug 1381625] Re: Adjust brightness to lowest value caused screen whole black

2015-11-18 Thread Launchpad Bug Tracker
** Branch linked: lp:~ci-train-bot/unity-settings-daemon/unity-settings- daemon-ubuntu-xenial-landing-010 -- 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/1381625 Title: Adjust brightness

[Kernel-packages] [Bug 1381625] Re: Adjust brightness to lowest value caused screen whole black

2015-11-16 Thread Tejal
** Attachment added: "bug.rar" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1381625/+attachment/4520010/+files/bug.rar -- 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/1381625

[Kernel-packages] [Bug 1381625] Re: Adjust brightness to lowest value caused screen whole black

2015-11-13 Thread Shih-Yuan Lee
This bug probably targets on how to avoid this driver behavior's change. -- 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/1381625 Title: Adjust brightness to lowest value caused screen

[Kernel-packages] [Bug 1381625] Re: Adjust brightness to lowest value caused screen whole black

2015-11-13 Thread Shih-Yuan Lee
Since Linux kernel v3.18-rc1, it contains commit e6755fb78e8f20ecadf2a4080084121336624ad9 Author: Jani Nikula Date: Tue Aug 12 17:11:42 2014 +0300 drm/i915: switch off backlight for backlight class 0 brightness -- You received this bug notification because you are a member of Kernel

[Kernel-packages] [Bug 1381625] Re: Adjust brightness to lowest value caused screen whole black

2015-11-13 Thread Shih-Yuan Lee
Reverting that commit can easily fix this issue or we need to fix all userspace programs related to the brightness control. -- 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/1381625 Title:

[Kernel-packages] [Bug 1381625] Re: Adjust brightness to lowest value caused screen whole black

2015-11-13 Thread Kai-Heng Feng
There are some scenarios make turning off brightness not desirable, e.g. an AIO user changes brightness to the lowest level in unity-control- center, he can't change it back if his keyboard does not have brightness hotkey. Since we can't ensure that all graphics driver have the same mechanism and

[Kernel-packages] [Bug 1381625] Re: Adjust brightness to lowest value caused screen whole black

2015-11-13 Thread Martin Pitt
So if you run into that situation, discovering that this is configurable and changing the configuration seems equally hard (or harder). I can understand the heuristics what was done upstream in gnome-settings- daemon (see linked bug) to generally clam the brightness to >= 1 if there are many

[Kernel-packages] [Bug 1381625] Re: Adjust brightness to lowest value caused screen whole black

2015-11-13 Thread Kai-Heng Feng
Yes, we can use that approach on unity-settings-daemon, with some minor modification to make xbacklight works. My intention to make it configurable is because there was a Braswell laptop with a cheap panel, which needs at least 5% max brightness to make it barely visible. For OEM projects, to

[Kernel-packages] [Bug 1381625] Re: Adjust brightness to lowest value caused screen whole black

2015-11-13 Thread Martin Pitt
I. e. is the problem that the backlight doesn't come back on when you raise the brightness again or so? -- 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/1381625 Title: Adjust brightness

[Kernel-packages] [Bug 1381625] Re: Adjust brightness to lowest value caused screen whole black

2015-11-13 Thread Martin Pitt
see my comments on https://code.launchpad.net/~kaihengfeng/unity- settings-daemon/add-brightness-limit-mechanism/+merge/277416 , high- level userspace isn't the place for changing this. Can you please elaborate on what the actual bug is here? I. e. what's wrong with turning off the backlight on

[Kernel-packages] [Bug 1381625] Re: Adjust brightness to lowest value caused screen whole black

2015-11-12 Thread Shih-Yuan Lee
** Bug watch added: GNOME Bug Tracker #744278 https://bugzilla.gnome.org/show_bug.cgi?id=744278 ** Also affects: unity-settings-daemon via https://bugzilla.gnome.org/show_bug.cgi?id=744278 Importance: Unknown Status: Unknown -- You received this bug notification because you are

[Kernel-packages] [Bug 1381625] Re: Adjust brightness to lowest value caused screen whole black

2015-11-12 Thread Launchpad Bug Tracker
** Branch linked: lp:~fourdollars/unity-settings-daemon/fix-lowest- brightness -- 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/1381625 Title: Adjust brightness to lowest value caused

[Kernel-packages] [Bug 1381625] Re: Adjust brightness to lowest value caused screen whole black

2015-11-12 Thread Bug Watch Updater
** Changed in: unity-settings-daemon Status: Unknown => Fix Released ** Changed in: unity-settings-daemon Importance: Unknown => Medium -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu.

[Kernel-packages] [Bug 1381625] Re: Adjust brightness to lowest value caused screen whole black

2015-10-06 Thread Tejal
** Changed in: linux (Ubuntu) Assignee: (unassigned) => Tejal (tejalravih) -- 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/1381625 Title: Adjust brightness to lowest value caused

[Kernel-packages] [Bug 1381625] Re: Adjust brightness to lowest value caused screen whole black

2015-09-30 Thread Alberto Salvia Novella
** Changed in: unity-settings-daemon (Ubuntu) Importance: Undecided => High -- 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/1381625 Title: Adjust brightness to lowest value caused

[Kernel-packages] [Bug 1381625] Re: Adjust brightness to lowest value caused screen whole black

2015-09-27 Thread Launchpad Bug Tracker
Status changed to 'Confirmed' because the bug affects multiple users. ** Changed in: unity-settings-daemon (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu.

[Kernel-packages] [Bug 1381625] Re: Adjust brightness to lowest value caused screen whole black

2015-04-21 Thread Keng-Yu Lin
** Changed in: hwe-next Importance: Undecided = High -- 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/1381625 Title: Adjust brightness to lowest value caused screen whole black Status

[Kernel-packages] [Bug 1381625] Re: Adjust brightness to lowest value caused screen whole black

2015-03-18 Thread Zygmunt Krynicki
Hey, a small update. Lantern test v2 tests exactly what happens when brightness is set to 0. I have 10 samples so far and I will be able to analyze them today. My gut feeling is that acpi aka firmware control never tuns the backlight off entirely (so setting zero in userspace is safe) while raw

[Kernel-packages] [Bug 1381625] Re: Adjust brightness to lowest value caused screen whole black

2015-03-16 Thread Zygmunt Krynicki
Hey. I'm researching the behaviour of backlight in the wild and my current theory is that brightness of zero can equally well mean dim or totally off. I don't have a test for that yet so the sample range is very small (the hardware I have at home + several contributions from the community) but

[Kernel-packages] [Bug 1381625] Re: Adjust brightness to lowest value caused screen whole black

2015-03-11 Thread Timo Aaltonen
Ok, so this got fixed for i915_bdw in https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1374389 but even the fixed kernel doesn't work on my Wilson Beach SDP, and the commits in i915_bdw got reverted for 3.17 and up. Even drm-intel-next (-4.1) doesn't work. So I guess it's best to fix in

[Kernel-packages] [Bug 1381625] Re: Adjust brightness to lowest value caused screen whole black

2015-03-11 Thread Anthony Wong
** Changed in: hwe-next Status: Invalid = 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/1381625 Title: Adjust brightness to lowest value caused screen whole black

[Kernel-packages] [Bug 1381625] Re: Adjust brightness to lowest value caused screen whole black

2015-03-11 Thread Anthony Wong
** Changed in: hwe-next Assignee: (unassigned) = Timo Aaltonen (tjaalton) -- 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/1381625 Title: Adjust brightness to lowest value caused

[Kernel-packages] [Bug 1381625] Re: Adjust brightness to lowest value caused screen whole black

2015-02-05 Thread Anthony Wong
my understanding of the oem bug is we think the driver is behaving normal and this should be fixed in user space, Tim Chen already has a patch for g-s-d which we can re-work it for u-s-d. ** Also affects: ubuntu-system-settings (Ubuntu) Importance: Undecided Status: New ** No longer

[Kernel-packages] [Bug 1381625] Re: Adjust brightness to lowest value caused screen whole black

2015-02-04 Thread Ara Pulido
** No longer affects: oem-priority ** Also affects: hwe-next Importance: Undecided Status: New -- 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/1381625 Title: Adjust brightness

[Kernel-packages] [Bug 1381625] Re: Adjust brightness to lowest value caused screen whole black

2015-01-22 Thread Vanessa Chang
update kernel from 3.16.0-25 to 3.19.0-031900rc4-lowlatency, the brightness issue is not fixed. ** Changed in: linux (Ubuntu) Status: Incomplete = Confirmed ** Tags added: kernel-bug-exists-upstream -- You received this bug notification because you are a member of Kernel Packages,

[Kernel-packages] [Bug 1381625] Re: Adjust brightness to lowest value caused screen whole black

2015-01-14 Thread Joseph Salisbury
Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v3.19 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

[Kernel-packages] [Bug 1381625] Re: Adjust brightness to lowest value caused screen whole black

2015-01-13 Thread Vanessa Chang
Issue can be reproduced with below builds, please refer the results below: [Tested images for verification] Stock 14.04.1 [ubuntu-14.04.1-desktop-amd64.iso] - Failed Stock 14.10 [ubuntu-14.10-desktop-amd64.iso] - Failed 15.04 daily build @1/13 [vivid-desktop-amd64.iso] - Failed [Test Case /

[Kernel-packages] [Bug 1381625] Re: Adjust brightness to lowest value caused screen whole black

2015-01-13 Thread Vanessa Chang
Issue can be reproduced with below builds, please refer the results below: [Tested images for verification] Stock 14.04.1 [ubuntu-14.04.1-desktop-amd64.iso] - Failed Stock 14.10 [ubuntu-14.10-desktop-amd64.iso] - Failed 15.04 daily build @1/13 [vivid-desktop-amd64.iso] - Failed [Test Case /

[Kernel-packages] [Bug 1381625] Re: Adjust brightness to lowest value caused screen whole black

2015-01-13 Thread Vanessa Chang
** Description changed: - When using F2 hotkey to adjust screen brightness to lowest value, it - truns screen backlight off. + [Impact] - Steps: 1. Press F2 to adjust screen brightness to lowest value + When adjusting screen brightness to lowest value, it turns screen + backlight off. + +

[Kernel-packages] [Bug 1381625] Re: Adjust brightness to lowest value caused screen whole black

2015-01-09 Thread Emily Chien
@Timo, Original oem lp:1281379 was reported with Intel Haswell or Chief River platforms. We will verify with vivid in kittyhawk 2.0 and update result here. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu.

[Kernel-packages] [Bug 1381625] Re: Adjust brightness to lowest value caused screen whole black

2015-01-09 Thread Timo Aaltonen
hm, didn't notice this was a public bug.. so moving to linux ** Package changed: unity-settings-daemon (Ubuntu) = linux (Ubuntu) ** No longer affects: unity-settings-daemon -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in

[Kernel-packages] [Bug 1381625] Re: Adjust brightness to lowest value caused screen whole black

2015-01-09 Thread Bin Li
Timo, Thanks for you quick look. Here is the original bugs. :) https://bugs.launchpad.net/stella/+bug/1281379 -- 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/1381625 Title: Adjust

[Kernel-packages] [Bug 1381625] Re: Adjust brightness to lowest value caused screen whole black

2015-01-09 Thread Joseph Salisbury
** Changed in: linux (Ubuntu) Importance: Undecided = High ** Tags added: 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/1381625 Title: Adjust brightness to lowest value