Federico Leoni, 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, please just make a comment to this.
If reproducible, could you also please test the latest upstream kernel available (not the daily folder) following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags: kernel-fixed-upstream kernel-fixed-upstream-VERSION-NUMBER where VERSION-NUMBER is the version number of the kernel you tested. For example: kernel-fixed-upstream-3.14-rc3 This can be done by clicking on the yellow circle with a black pencil icon next to the word Tags located at the bottom of the bug description. As well, please remove the tag: needs-upstream-testing If the mainline kernel does not fix this bug, please add the following tags: kernel-bug-exists-upstream kernel-bug-exists-upstream-VERSION-NUMBER As well, please remove the tag: needs-upstream-testing Once testing of the upstream kernel is complete, please mark this bug's Status as Confirmed. Please let us know your results. Thank you for your understanding. ** Summary changed: - Dell Vostro 1310 (and possibly 1510/1710) no brightness control on (x)ubuntu 13.10 + 8086:2a02 [Dell Vostro 1310] no brightness control on (x)ubuntu 13.10 ** Tags removed: acpi brightness ** Tags added: latest-bios-a15 needs-upstream-testing ** Description changed: - A customer of mine gave me his old notebook because he bought a new one. - I trow in a new HDD and now the laptop is running an up to date Xubuntu - 13.10 64bit. Everithing is working fine exept for the brightness - control: when I press the appropriate keys on keyboard the slider - appears on the upper right corner of the screen but even if it changes - the setting has no effect on the system . The notebook I have has an - Intel X3100 integrated video + When I press the appropriate keys on keyboard (which ones specifically?) + the slider appears on the upper right corner of the screen but the + brightness doesn't change. - 00:02.0 VGA compatible controller: Intel Corporation Mobile GM965/GL960 - Integrated Graphics Controller (primary) (rev 0c) - - I tried different combinations on grub but no one resolved the issue. Problem is I have not intel_backlight on /sys/class/backlight folder but just acpi_video0 or dell_backlight (if I set acpi_backlight=vendor on grub). Since I don't have intel_backlight folder I can't apply many of the workaround found here and there. - ------------------ - effe@Vostro1310:/sys/class/backlight$ for i in /sys/class/backlight/*; do echo -e "\n $i"; cat $i/{brightness,max_brightness,actual_brightness}; done + WORKAROUND: /sys/class/backlight$ for i in /sys/class/backlight/*; do + echo -e "\n $i"; cat $i/{brightness,max_brightness,actual_brightness}; + done - /sys/class/backlight/dell_backlight + /sys/class/backlight/dell_backlight 1 7 1 - ------------------ If I increase the backlight the files are correctly updated: - - ------------------ - /sys/class/backlight/dell_backlight + /sys/class/backlight/dell_backlight 7 7 7 - ------------------ - acpi_listen works just on new mainline kernel 3.13.2 (tried bot generic - and lowlatency) on stock kernel there isn't output at all: - + acpi_listen works just on new mainline kernel 3.13.2 (tried bot generic and lowlatency) on stock kernel there isn't output at all: video/brightnessup BRTUP 00000086 00000000 K video/brightnessup BRTUP 00000086 00000000 K video/brightnessup BRTUP 00000086 00000000 K video/brightnessdown BRTDN 00000087 00000000 K video/brightnessdown BRTDN 00000087 00000000 K video/brightnessdown BRTDN 00000087 00000000 K Now I'm using xrandr to change the brightness: - xrandr --output LVDS1 --brightness 0.5 - but since xrandr is a software overlay my battery life is horrible, I'm stuck on 100% brightness. - Beside this, sometimes the brightness slider appears spontaneously without pressing any keys but again with no effect. + but since xrandr is a software overlay my battery life is horrible, I'm + stuck on 100% brightness. Beside this, sometimes the brightness slider + appears spontaneously without pressing any keys but again with no + effect. ProblemType: Bug DistroRelease: Ubuntu 13.10 Package: linux-image-3.11.0-15-generic 3.11.0-15.25 ProcVersionSignature: Ubuntu 3.11.0-15.25-generic 3.11.10 Uname: Linux 3.11.0-15-generic x86_64 NonfreeKernelModules: wl ApportVersion: 2.12.5-0ubuntu2.2 Architecture: amd64 AudioDevicesInUse: - USER PID ACCESS COMMAND - /dev/snd/controlC0: effe 1526 F.... pulseaudio + USER PID ACCESS COMMAND + /dev/snd/controlC0: effe 1526 F.... pulseaudio CurrentDmesg: - [ 102.704995] ERROR @wl_dev_intvar_get : error (-1) - [ 102.705003] ERROR @wl_cfg80211_get_tx_power : error (-1) + [ 102.704995] ERROR @wl_dev_intvar_get : error (-1) + [ 102.705003] ERROR @wl_cfg80211_get_tx_power : error (-1) Date: Mon Feb 17 13:27:10 2014 HibernationDevice: RESUME=UUID=d0ee674f-0ea7-47e1-ba6f-1a849ba35941 InstallationDate: Installed on 2014-02-10 (6 days ago) InstallationMedia: Xubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016) MachineType: Dell Inc. Vostro1310 MarkForUpload: True ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-15-generic root=UUID=44ccbe21-7e45-468c-b942-1773a32943b0 ro quiet splash vt.handoff=7 RelatedPackageVersions: - linux-restricted-modules-3.11.0-15-generic N/A - linux-backports-modules-3.11.0-15-generic N/A - linux-firmware 1.116.2 + linux-restricted-modules-3.11.0-15-generic N/A + linux-backports-modules-3.11.0-15-generic N/A + linux-firmware 1.116.2 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 03/18/2009 dmi.bios.vendor: Dell Inc. dmi.bios.version: A15 dmi.board.name: 0K866H dmi.board.vendor: Dell Inc. dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: N/A dmi.modalias: dmi:bvnDellInc.:bvrA15:bd03/18/2009:svnDellInc.:pnVostro1310:pvrNull:rvnDellInc.:rn0K866H:rvr:cvnDellInc.:ct8:cvrN/A: dmi.product.name: Vostro1310 dmi.product.version: Null dmi.sys.vendor: Dell Inc. ** Changed in: linux (Ubuntu) Importance: Undecided => Low ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- 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/1281176 Title: 8086:2a02 [Dell Vostro 1310] no brightness control on (x)ubuntu 13.10 Status in “linux” package in Ubuntu: Incomplete Bug description: When I press the appropriate keys on keyboard (which ones specifically?) the slider appears on the upper right corner of the screen but the brightness doesn't change. Problem is I have not intel_backlight on /sys/class/backlight folder but just acpi_video0 or dell_backlight (if I set acpi_backlight=vendor on grub). Since I don't have intel_backlight folder I can't apply many of the workaround found here and there. WORKAROUND: /sys/class/backlight$ for i in /sys/class/backlight/*; do echo -e "\n $i"; cat $i/{brightness,max_brightness,actual_brightness}; done /sys/class/backlight/dell_backlight 1 7 1 If I increase the backlight the files are correctly updated: /sys/class/backlight/dell_backlight 7 7 7 acpi_listen works just on new mainline kernel 3.13.2 (tried bot generic and lowlatency) on stock kernel there isn't output at all: video/brightnessup BRTUP 00000086 00000000 K video/brightnessup BRTUP 00000086 00000000 K video/brightnessup BRTUP 00000086 00000000 K video/brightnessdown BRTDN 00000087 00000000 K video/brightnessdown BRTDN 00000087 00000000 K video/brightnessdown BRTDN 00000087 00000000 K Now I'm using xrandr to change the brightness: xrandr --output LVDS1 --brightness 0.5 but since xrandr is a software overlay my battery life is horrible, I'm stuck on 100% brightness. Beside this, sometimes the brightness slider appears spontaneously without pressing any keys but again with no effect. ProblemType: Bug DistroRelease: Ubuntu 13.10 Package: linux-image-3.11.0-15-generic 3.11.0-15.25 ProcVersionSignature: Ubuntu 3.11.0-15.25-generic 3.11.10 Uname: Linux 3.11.0-15-generic x86_64 NonfreeKernelModules: wl ApportVersion: 2.12.5-0ubuntu2.2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: effe 1526 F.... pulseaudio CurrentDmesg: [ 102.704995] ERROR @wl_dev_intvar_get : error (-1) [ 102.705003] ERROR @wl_cfg80211_get_tx_power : error (-1) Date: Mon Feb 17 13:27:10 2014 HibernationDevice: RESUME=UUID=d0ee674f-0ea7-47e1-ba6f-1a849ba35941 InstallationDate: Installed on 2014-02-10 (6 days ago) InstallationMedia: Xubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016) MachineType: Dell Inc. Vostro1310 MarkForUpload: True ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-15-generic root=UUID=44ccbe21-7e45-468c-b942-1773a32943b0 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.11.0-15-generic N/A linux-backports-modules-3.11.0-15-generic N/A linux-firmware 1.116.2 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 03/18/2009 dmi.bios.vendor: Dell Inc. dmi.bios.version: A15 dmi.board.name: 0K866H dmi.board.vendor: Dell Inc. dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: N/A dmi.modalias: dmi:bvnDellInc.:bvrA15:bd03/18/2009:svnDellInc.:pnVostro1310:pvrNull:rvnDellInc.:rn0K866H:rvr:cvnDellInc.:ct8:cvrN/A: dmi.product.name: Vostro1310 dmi.product.version: Null dmi.sys.vendor: Dell Inc. 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