Pedro Marques, could you please test the latest upstream kernel available from the very top line at the top of the page (the release names are irrelevant for testing, and please do not test the daily folder) following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue.
If the test did not allow you to test to the issue (ex. you couldn't boot into the OS) please make a comment in your report about this, and continue to test the next most recent kernel version until you can test to 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 exactly shown as: kernel-fixed-upstream-3.18-rc7 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. If the mainline kernel does not fix this bug, please add the following tags: kernel-bug-exists-upstream kernel-bug-exists-upstream-VERSION-NUMBER 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: - No brightness control on imac 27 Core i5-2500S - ubuntu trysty + 1002:6740 [iMac12,2] No 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/1397088 Title: 1002:6740 [iMac12,2] No brightness control Status in linux package in Ubuntu: Incomplete Bug description: Hello, I have no brightness control on imac 27 Core i5-2500S (poduct model: imac 12.2) running ubuntu trysty with xorg video ati driver. tried to use fglrx proprietary drivers, and end up with black screen and unable to boot. i only needed to low down brightness a little.. --- ApportVersion: 2.14.1-0ubuntu3.5 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: pfmarques 2190 F.... pulseaudio /dev/snd/controlC0: pfmarques 2190 F.... pulseaudio CRDA: country AW: (2402 - 2482 @ 40), (N/A, 20) (5170 - 5250 @ 40), (N/A, 20) (5250 - 5330 @ 40), (N/A, 20), DFS (5490 - 5710 @ 40), (N/A, 27), DFS DistroRelease: Ubuntu 14.04 HibernationDevice: RESUME=UUID=0c9bef7b-65b8-41bf-9548-6cf11bdd4059 InstallationDate: Installed on 2014-11-25 (5 days ago) InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2) MachineType: Apple Inc. iMac12,2 Package: linux (not installed) ProcFB: 0 inteldrmfb 1 radeondrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-40-generic.efi.signed root=UUID=dba8f74a-366d-4de8-862c-f0118c556c07 ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 3.13.0-40.69-generic 3.13.11.10 PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not accessible: Permission denied No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: linux-restricted-modules-3.13.0-40-generic N/A linux-backports-modules-3.13.0-40-generic N/A linux-firmware 1.127.8 Tags: trusty Uname: Linux 3.13.0-40-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: WifiSyslog: Dec 1 11:54:46 pfmarques-iMac wpa_supplicant[992]: message repeated 75 times: [ wlan0: CTRL-EVENT-SCAN-STARTED ] Dec 1 11:54:49 pfmarques-iMac wpa_supplicant[992]: nl80211: send_and_recv->nl_recvmsgs failed: -33 Dec 1 11:55:49 pfmarques-iMac wpa_supplicant[992]: wlan0: CTRL-EVENT-SCAN-STARTED Dec 1 12:01:14 pfmarques-iMac kernel: [ 5030.247003] perf samples too long (2512 > 2500), lowering kernel.perf_event_max_sample_rate to 50000 Dec 1 12:08:29 pfmarques-iMac kernel: [ 5465.506679] systemd-hostnamed[7862]: Warning: nss-myhostname is not installed. Changing the local hostname might make it unresolveable. Please install nss-myhostname! _MarkForUpload: True dmi.bios.date: 01/24/12 dmi.bios.vendor: Apple Inc. dmi.bios.version: IM121.88Z.0047.B1F.1201241648 dmi.board.name: Mac-942B59F58194171B dmi.board.vendor: Apple Inc. dmi.board.version: iMac12,2 dmi.chassis.type: 13 dmi.chassis.vendor: Apple Inc. dmi.chassis.version: Mac-942B59F58194171B dmi.modalias: dmi:bvnAppleInc.:bvrIM121.88Z.0047.B1F.1201241648:bd01/24/12:svnAppleInc.:pniMac12,2:pvr1.0:rvnAppleInc.:rnMac-942B59F58194171B:rvriMac12,2:cvnAppleInc.:ct13:cvrMac-942B59F58194171B: dmi.product.name: iMac12,2 dmi.product.version: 1.0 dmi.sys.vendor: Apple Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1397088/+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
