Re: [Kernel-packages] [Bug 1098216] Re: Regression in brightness control on Lenovo Thinkpad X230 (+tablet) and X1 Carbon
I just tested it on my Thinkpad X1 (haswell) and the fix works. However, there is a side effect. Connecting and Disconnecting the Power resets the brightness to maximum. Not sure how to go about working around this. anmar On 26 February 2014 23:14, madbiologist 1098...@bugs.launchpad.net wrote: The upstream 3.14-rc4 kernel also contains this commit: author Rafael J. Wysocki committer Rafael J. Wysocki commit a6940190ac15c361862a1a8f50a2072db7184749 tree c73be15646c6418f77a94fede3afc7eabd589dd6 parent 0e9f81d3b7cd0649a3bc437391b6a0650f98f844 Revert ACPI: Blacklist Win8 OSI for some HP laptop 2013 models This reverts commit 2d4054d84224 (ACPI: Blacklist Win8 OSI for some HP laptop 2013 models) that is not necessary any more after previous commit 1811fcb029fa (ACPI / video: Add systems that should favour native backlight interface). Requested-by: Takashi Iwai Tested-by: Mika Westerberg Signed-off-by: Rafael J. Wysocki -- You received this bug notification because you are subscribed to a duplicate bug report (1121951). https://bugs.launchpad.net/bugs/1098216 Title: Regression in brightness control on Lenovo Thinkpad X230 (+tablet) and X1 Carbon Status in The Linux Kernel: In Progress Status in “linux” package in Ubuntu: Triaged Status in “linux” package in Fedora: Unknown Bug description: == Raring SRU Justification == Impact: A number of ThinkPad models have a workaround in the ACPI backlight implementation for Windows 8 that more or less completely breaks backlight control. Fix: Add an OSI quirk to no longer claim to be Windows 8 on these machines, causing the firmware to revert to the older, working behavior. Test Case: Verified on LP #1098216 and bugzill.kernel.org #51231. --- Something changed between the 3.5 and the 3.7 kernel, leading to broken brightness control on my Thinkpad x230. Here are some test results: == 3.5.0-21-generic == === Post-boot values === /sys/class/backlight: - intel-backlight + actual_brightness = 4438 + bl_power = 0 + brightness = 4438 + max_brightness = 4438 - acpi_video0 + actual_brightness = 15 + bl_power = 0 + brightness = 15 + max_brightness = 15 === Tests === echo 0 acpi_video0/brightness = works echo 0 intel_backlight/brightness = works == 3.8.0-0-generic == === Post-boot values === /sys/class/backlight: - intel-backlight + actual_brightness = 4438 + bl_power = 0 + brightness = 4438 + max_brightness = 4438 - acpi_video0 + actual_brightness = 100 + bl_power = 0 + brightness = 100 + max_brightness = 100 === Tests === echo 0 acpi_video0/brightness = doesn't do anything echo 0 intel_backlight/brightness = works --- ApportVersion: 2.8-0ubuntu1 Architecture: amd64 CheckboxSubmission: 12108b8b8b67d760cdd84f1b9574e7f3 CheckboxSystem: bb422ca46d02494cdbc459927a98bc2f DistroRelease: Ubuntu 13.04 InstallationDate: Installed on 2012-09-02 (129 days ago) InstallationMedia: Ubuntu 12.10 Quantal Quetzal - Alpha amd64 (20120902) MarkForUpload: True Package: linux (not installed) ProcEnviron: LANGUAGE=en_US:en TERM=xterm PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcVersionSignature: Ubuntu 3.8.0-0.1-generic 3.8.0-rc3 Tags: raring Uname: Linux 3.8.0-0-generic x86_64 UnreportableReason: The running kernel is not an Ubuntu kernel UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: WORKAROUND: Add to /etc/default/grub in the variable GRUB_CMDLINE_LINUX_DEFAULT: acpi_osi=\!Windows 2012\ e.g: GRUB_CMDLINE_LINUX_DEFAULT=quiet splash acpi_osi=\!Windows 2012\ Then run sudo update-grub. To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1098216/+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/1098216 Title: Regression in brightness control on Lenovo Thinkpad X230 (+tablet) and X1 Carbon Status in The Linux Kernel: In Progress Status in “linux” package in Ubuntu: Triaged Status in “linux” package in Fedora: Unknown Bug description: == Raring SRU Justification == Impact: A number of ThinkPad models have a workaround in the ACPI backlight implementation for Windows 8 that more or less completely breaks backlight control. Fix: Add an OSI quirk to no longer claim to be Windows 8 on these machines, causing the firmware to revert to the older, working behavior. Test Case: Verified on LP #1098216 and bugzill.kernel.org #51231. --- Something changed between the 3.5 and the 3.7 kernel, leading to broken brightness control on my Thinkpad x230. Here are some test results: == 3.5.0-21-generic == === Post-boot values ===
Re: [Kernel-packages] [Bug 1098216] Re: Regression in brightness control on Lenovo Thinkpad X230 (+tablet) and X1 Carbon
On 13.10, the brightness works fine but the stepping is screwed up. In other words, you don't get to access all of the brightness levels the LCD offers. Instead, you get half the number of steps. It isn't a show stopper by any stretch so go ahead and get your X1 carbon. It is the best machine out there ;-) On 5 January 2014 19:59, Matthew Tucker-Simmons 1098...@bugs.launchpad.net wrote: I'm using an X1 Carbon with 13.10 and the brightness control works fine. On Wed, Jan 1, 2014 at 11:29 AM, CSRedRat 1098...@bugs.launchpad.netwrote: Fixed? Can i'm buy X1 Carbon? :) -- You received this bug notification because you are subscribed to the bug report. https://bugs.launchpad.net/bugs/1098216 Title: Regression in brightness control on Lenovo Thinkpad X230 (+tablet) and X1 Carbon Status in The Linux Kernel: In Progress Status in “linux” package in Ubuntu: Triaged Status in “linux” package in Fedora: Unknown Bug description: == Raring SRU Justification == Impact: A number of ThinkPad models have a workaround in the ACPI backlight implementation for Windows 8 that more or less completely breaks backlight control. Fix: Add an OSI quirk to no longer claim to be Windows 8 on these machines, causing the firmware to revert to the older, working behavior. Test Case: Verified on LP #1098216 and bugzill.kernel.org #51231. --- Something changed between the 3.5 and the 3.7 kernel, leading to broken brightness control on my Thinkpad x230. Here are some test results: == 3.5.0-21-generic == === Post-boot values === /sys/class/backlight: - intel-backlight + actual_brightness = 4438 + bl_power = 0 + brightness = 4438 + max_brightness = 4438 - acpi_video0 + actual_brightness = 15 + bl_power = 0 + brightness = 15 + max_brightness = 15 === Tests === echo 0 acpi_video0/brightness = works echo 0 intel_backlight/brightness = works == 3.8.0-0-generic == === Post-boot values === /sys/class/backlight: - intel-backlight + actual_brightness = 4438 + bl_power = 0 + brightness = 4438 + max_brightness = 4438 - acpi_video0 + actual_brightness = 100 + bl_power = 0 + brightness = 100 + max_brightness = 100 === Tests === echo 0 acpi_video0/brightness = doesn't do anything echo 0 intel_backlight/brightness = works --- ApportVersion: 2.8-0ubuntu1 Architecture: amd64 CheckboxSubmission: 12108b8b8b67d760cdd84f1b9574e7f3 CheckboxSystem: bb422ca46d02494cdbc459927a98bc2f DistroRelease: Ubuntu 13.04 InstallationDate: Installed on 2012-09-02 (129 days ago) InstallationMedia: Ubuntu 12.10 Quantal Quetzal - Alpha amd64 (20120902) MarkForUpload: True Package: linux (not installed) ProcEnviron: LANGUAGE=en_US:en TERM=xterm PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcVersionSignature: Ubuntu 3.8.0-0.1-generic 3.8.0-rc3 Tags: raring Uname: Linux 3.8.0-0-generic x86_64 UnreportableReason: The running kernel is not an Ubuntu kernel UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: WORKAROUND: Add to /etc/default/grub in the variable GRUB_CMDLINE_LINUX_DEFAULT: acpi_osi=\!Windows 2012\ e.g: GRUB_CMDLINE_LINUX_DEFAULT=quiet splash acpi_osi=\!Windows 2012\ Then run sudo update-grub. To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1098216/+subscriptions -- You received this bug notification because you are subscribed to a duplicate bug report (1121951). https://bugs.launchpad.net/bugs/1098216 Title: Regression in brightness control on Lenovo Thinkpad X230 (+tablet) and X1 Carbon Status in The Linux Kernel: In Progress Status in “linux” package in Ubuntu: Triaged Status in “linux” package in Fedora: Unknown Bug description: == Raring SRU Justification == Impact: A number of ThinkPad models have a workaround in the ACPI backlight implementation for Windows 8 that more or less completely breaks backlight control. Fix: Add an OSI quirk to no longer claim to be Windows 8 on these machines, causing the firmware to revert to the older, working behavior. Test Case: Verified on LP #1098216 and bugzill.kernel.org #51231. --- Something changed between the 3.5 and the 3.7 kernel, leading to broken brightness control on my Thinkpad x230. Here are some test results: == 3.5.0-21-generic == === Post-boot values === /sys/class/backlight: - intel-backlight + actual_brightness = 4438 + bl_power = 0 + brightness = 4438 + max_brightness = 4438 - acpi_video0 + actual_brightness = 15 + bl_power = 0 + brightness = 15 + max_brightness = 15 === Tests === echo 0 acpi_video0/brightness = works echo 0
Re: [Kernel-packages] [Bug 1098216] Re: Regression in brightness control on Lenovo Thinkpad X230 (+tablet) and X1 Carbon
I'm using a E49 and still not working without adding parameters. On Mon, Jan 6, 2014 at 12:11 PM, Anthony Wong anthony.w...@canonical.com wrote: The missing brightness level problem can be worked around by using the kernel parameter video.brightness_switch_enabled=0. Add the param to GRUB_CMDLINE_LINUX_DEFAULT in /etc/default/grub, then run 'sudo update-grub' and reboot. -- You received this bug notification because you are subscribed to the bug report. https://bugs.launchpad.net/bugs/1098216 Title: Regression in brightness control on Lenovo Thinkpad X230 (+tablet) and X1 Carbon To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1098216/+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/1098216 Title: Regression in brightness control on Lenovo Thinkpad X230 (+tablet) and X1 Carbon Status in The Linux Kernel: In Progress Status in “linux” package in Ubuntu: Triaged Status in “linux” package in Fedora: Unknown Bug description: == Raring SRU Justification == Impact: A number of ThinkPad models have a workaround in the ACPI backlight implementation for Windows 8 that more or less completely breaks backlight control. Fix: Add an OSI quirk to no longer claim to be Windows 8 on these machines, causing the firmware to revert to the older, working behavior. Test Case: Verified on LP #1098216 and bugzill.kernel.org #51231. --- Something changed between the 3.5 and the 3.7 kernel, leading to broken brightness control on my Thinkpad x230. Here are some test results: == 3.5.0-21-generic == === Post-boot values === /sys/class/backlight: - intel-backlight + actual_brightness = 4438 + bl_power = 0 + brightness = 4438 + max_brightness = 4438 - acpi_video0 + actual_brightness = 15 + bl_power = 0 + brightness = 15 + max_brightness = 15 === Tests === echo 0 acpi_video0/brightness = works echo 0 intel_backlight/brightness = works == 3.8.0-0-generic == === Post-boot values === /sys/class/backlight: - intel-backlight + actual_brightness = 4438 + bl_power = 0 + brightness = 4438 + max_brightness = 4438 - acpi_video0 + actual_brightness = 100 + bl_power = 0 + brightness = 100 + max_brightness = 100 === Tests === echo 0 acpi_video0/brightness = doesn't do anything echo 0 intel_backlight/brightness = works --- ApportVersion: 2.8-0ubuntu1 Architecture: amd64 CheckboxSubmission: 12108b8b8b67d760cdd84f1b9574e7f3 CheckboxSystem: bb422ca46d02494cdbc459927a98bc2f DistroRelease: Ubuntu 13.04 InstallationDate: Installed on 2012-09-02 (129 days ago) InstallationMedia: Ubuntu 12.10 Quantal Quetzal - Alpha amd64 (20120902) MarkForUpload: True Package: linux (not installed) ProcEnviron: LANGUAGE=en_US:en TERM=xterm PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcVersionSignature: Ubuntu 3.8.0-0.1-generic 3.8.0-rc3 Tags: raring Uname: Linux 3.8.0-0-generic x86_64 UnreportableReason: The running kernel is not an Ubuntu kernel UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: WORKAROUND: Add to /etc/default/grub in the variable GRUB_CMDLINE_LINUX_DEFAULT: acpi_osi=\!Windows 2012\ e.g: GRUB_CMDLINE_LINUX_DEFAULT=quiet splash acpi_osi=\!Windows 2012\ Then run sudo update-grub. To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1098216/+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
Re: [Kernel-packages] [Bug 1098216] Re: Regression in brightness control on Lenovo Thinkpad X230 (+tablet) and X1 Carbon
I'm using an X1 Carbon with 13.10 and the brightness control works fine. On Wed, Jan 1, 2014 at 11:29 AM, CSRedRat 1098...@bugs.launchpad.netwrote: Fixed? Can i'm buy X1 Carbon? :) -- You received this bug notification because you are subscribed to the bug report. https://bugs.launchpad.net/bugs/1098216 Title: Regression in brightness control on Lenovo Thinkpad X230 (+tablet) and X1 Carbon Status in The Linux Kernel: In Progress Status in “linux” package in Ubuntu: Triaged Status in “linux” package in Fedora: Unknown Bug description: == Raring SRU Justification == Impact: A number of ThinkPad models have a workaround in the ACPI backlight implementation for Windows 8 that more or less completely breaks backlight control. Fix: Add an OSI quirk to no longer claim to be Windows 8 on these machines, causing the firmware to revert to the older, working behavior. Test Case: Verified on LP #1098216 and bugzill.kernel.org #51231. --- Something changed between the 3.5 and the 3.7 kernel, leading to broken brightness control on my Thinkpad x230. Here are some test results: == 3.5.0-21-generic == === Post-boot values === /sys/class/backlight: - intel-backlight + actual_brightness = 4438 + bl_power = 0 + brightness = 4438 + max_brightness = 4438 - acpi_video0 + actual_brightness = 15 + bl_power = 0 + brightness = 15 + max_brightness = 15 === Tests === echo 0 acpi_video0/brightness = works echo 0 intel_backlight/brightness = works == 3.8.0-0-generic == === Post-boot values === /sys/class/backlight: - intel-backlight + actual_brightness = 4438 + bl_power = 0 + brightness = 4438 + max_brightness = 4438 - acpi_video0 + actual_brightness = 100 + bl_power = 0 + brightness = 100 + max_brightness = 100 === Tests === echo 0 acpi_video0/brightness = doesn't do anything echo 0 intel_backlight/brightness = works --- ApportVersion: 2.8-0ubuntu1 Architecture: amd64 CheckboxSubmission: 12108b8b8b67d760cdd84f1b9574e7f3 CheckboxSystem: bb422ca46d02494cdbc459927a98bc2f DistroRelease: Ubuntu 13.04 InstallationDate: Installed on 2012-09-02 (129 days ago) InstallationMedia: Ubuntu 12.10 Quantal Quetzal - Alpha amd64 (20120902) MarkForUpload: True Package: linux (not installed) ProcEnviron: LANGUAGE=en_US:en TERM=xterm PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcVersionSignature: Ubuntu 3.8.0-0.1-generic 3.8.0-rc3 Tags: raring Uname: Linux 3.8.0-0-generic x86_64 UnreportableReason: The running kernel is not an Ubuntu kernel UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: WORKAROUND: Add to /etc/default/grub in the variable GRUB_CMDLINE_LINUX_DEFAULT: acpi_osi=\!Windows 2012\ e.g: GRUB_CMDLINE_LINUX_DEFAULT=quiet splash acpi_osi=\!Windows 2012\ Then run sudo update-grub. To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1098216/+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/1098216 Title: Regression in brightness control on Lenovo Thinkpad X230 (+tablet) and X1 Carbon Status in The Linux Kernel: In Progress Status in “linux” package in Ubuntu: Triaged Status in “linux” package in Fedora: Unknown Bug description: == Raring SRU Justification == Impact: A number of ThinkPad models have a workaround in the ACPI backlight implementation for Windows 8 that more or less completely breaks backlight control. Fix: Add an OSI quirk to no longer claim to be Windows 8 on these machines, causing the firmware to revert to the older, working behavior. Test Case: Verified on LP #1098216 and bugzill.kernel.org #51231. --- Something changed between the 3.5 and the 3.7 kernel, leading to broken brightness control on my Thinkpad x230. Here are some test results: == 3.5.0-21-generic == === Post-boot values === /sys/class/backlight: - intel-backlight + actual_brightness = 4438 + bl_power = 0 + brightness = 4438 + max_brightness = 4438 - acpi_video0 + actual_brightness = 15 + bl_power = 0 + brightness = 15 + max_brightness = 15 === Tests === echo 0 acpi_video0/brightness = works echo 0 intel_backlight/brightness = works == 3.8.0-0-generic == === Post-boot values === /sys/class/backlight: - intel-backlight + actual_brightness = 4438 + bl_power = 0 + brightness = 4438 + max_brightness = 4438 - acpi_video0 + actual_brightness = 100 + bl_power = 0 + brightness = 100 + max_brightness = 100 === Tests === echo 0 acpi_video0/brightness = doesn't do
Re: [Kernel-packages] [Bug 1098216] Re: Regression in brightness control on Lenovo Thinkpad X230 (+tablet) and X1 Carbon
Is that with the newest patches? On Mon, Sep 2, 2013 at 7:34 AM, lepri13 1098...@bugs.launchpad.net wrote: Can someone test possible workaround, I am on 3.10.7 when I choose in BIOS under keyboard options swap Fn and Ctrl keys brightness and keyboard seems to work without Grub startup arguments. -- You received this bug notification because you are subscribed to the bug report. https://bugs.launchpad.net/bugs/1098216 Title: Regression in brightness control on Lenovo Thinkpad X230 (+tablet) and X1 Carbon Status in The Linux Kernel: In Progress Status in “linux” package in Ubuntu: Triaged Status in “linux” package in Fedora: Unknown Bug description: == Raring SRU Justification == Impact: A number of ThinkPad models have a workaround in the ACPI backlight implementation for Windows 8 that more or less completely breaks backlight control. Fix: Add an OSI quirk to no longer claim to be Windows 8 on these machines, causing the firmware to revert to the older, working behavior. Test Case: Verified on LP #1098216 and bugzill.kernel.org #51231. --- Something changed between the 3.5 and the 3.7 kernel, leading to broken brightness control on my Thinkpad x230. Here are some test results: == 3.5.0-21-generic == === Post-boot values === /sys/class/backlight: - intel-backlight + actual_brightness = 4438 + bl_power = 0 + brightness = 4438 + max_brightness = 4438 - acpi_video0 + actual_brightness = 15 + bl_power = 0 + brightness = 15 + max_brightness = 15 === Tests === echo 0 acpi_video0/brightness = works echo 0 intel_backlight/brightness = works == 3.8.0-0-generic == === Post-boot values === /sys/class/backlight: - intel-backlight + actual_brightness = 4438 + bl_power = 0 + brightness = 4438 + max_brightness = 4438 - acpi_video0 + actual_brightness = 100 + bl_power = 0 + brightness = 100 + max_brightness = 100 === Tests === echo 0 acpi_video0/brightness = doesn't do anything echo 0 intel_backlight/brightness = works --- ApportVersion: 2.8-0ubuntu1 Architecture: amd64 CheckboxSubmission: 12108b8b8b67d760cdd84f1b9574e7f3 CheckboxSystem: bb422ca46d02494cdbc459927a98bc2f DistroRelease: Ubuntu 13.04 InstallationDate: Installed on 2012-09-02 (129 days ago) InstallationMedia: Ubuntu 12.10 Quantal Quetzal - Alpha amd64 (20120902) MarkForUpload: True Package: linux (not installed) ProcEnviron: LANGUAGE=en_US:en TERM=xterm PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcVersionSignature: Ubuntu 3.8.0-0.1-generic 3.8.0-rc3 Tags: raring Uname: Linux 3.8.0-0-generic x86_64 UnreportableReason: The running kernel is not an Ubuntu kernel UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: WORKAROUND: Add to /etc/default/grub in the variable GRUB_CMDLINE_LINUX_DEFAULT: acpi_osi=\!Windows 2012\ e.g: GRUB_CMDLINE_LINUX_DEFAULT=quiet splash acpi_osi=\!Windows 2012\ Then run sudo update-grub. To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1098216/+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/1098216 Title: Regression in brightness control on Lenovo Thinkpad X230 (+tablet) and X1 Carbon Status in The Linux Kernel: In Progress Status in “linux” package in Ubuntu: Triaged Status in “linux” package in Fedora: Unknown Bug description: == Raring SRU Justification == Impact: A number of ThinkPad models have a workaround in the ACPI backlight implementation for Windows 8 that more or less completely breaks backlight control. Fix: Add an OSI quirk to no longer claim to be Windows 8 on these machines, causing the firmware to revert to the older, working behavior. Test Case: Verified on LP #1098216 and bugzill.kernel.org #51231. --- Something changed between the 3.5 and the 3.7 kernel, leading to broken brightness control on my Thinkpad x230. Here are some test results: == 3.5.0-21-generic == === Post-boot values === /sys/class/backlight: - intel-backlight + actual_brightness = 4438 + bl_power = 0 + brightness = 4438 + max_brightness = 4438 - acpi_video0 + actual_brightness = 15 + bl_power = 0 + brightness = 15 + max_brightness = 15 === Tests === echo 0 acpi_video0/brightness = works echo 0 intel_backlight/brightness = works == 3.8.0-0-generic == === Post-boot values === /sys/class/backlight: - intel-backlight + actual_brightness = 4438 + bl_power = 0 + brightness = 4438 + max_brightness = 4438 - acpi_video0 + actual_brightness = 100 + bl_power = 0
