[Bug 1295141] Re: Toshiba Qosmio X75-A7298 - Can't Adjust Brightness
Lonnie, I have this same laptop. When booting the 3.14 or higher kernels, you don't get a screen freeze at boot unless running nomodeset or the proprietary Nvidia drivers? I boot with the kernel mode nomodeset, but then I don't have any way to control brightness. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1295141 Title: Toshiba Qosmio X75-A7298 - Can't Adjust Brightness To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1295141/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1295141] Re: Toshiba Qosmio X75-A7298 - Can't Adjust Brightness
I've made additional comments about this bug here: https://bugzilla.kernel.org/show_bug.cgi?id=72551 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1295141 Title: Toshiba Qosmio X75-A7298 - Can't Adjust Brightness To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1295141/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1295141] Re: Toshiba Qosmio X75-A7298 - Can't Adjust Brightness
Looking forward to getting this fixed. Confirm this as well. Thank you! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1295141 Title: Toshiba Qosmio X75-A7298 - Can't Adjust Brightness To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1295141/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1295141] Re: Toshiba Qosmio X75-A7298 - Can't Adjust Brightness
Aaron Lu asked for these things: Please list what backlight control interfaces do you have: # ls /sys/class/backlight acpi_video0 intel_backlight And test if manually echo a value works: # cd /sys/class/backlight/i915_xxx # cat max_brightness user@Qosmio-X75-A:~$ cd /sys/class/backlight/i915_xxx bash: cd: /sys/class/backlight/i915_xxx: No such file or directory user@Qosmio-X75-A:~$ cd /sys user@Qosmio-X75-A:/sys$ ls block class devices fs kernel power busdevfirmware hypervisor module user@Qosmio-X75-A:/sys$ cd class/backlight/ user@Qosmio-X75-A:/sys/class/backlight$ ls acpi_video0 intel_backlight user@Qosmio-X75-A:/sys/class/backlight$ cd intel_backlight user@Qosmio-X75-A:/sys/class/backlight/intel_backlight$ ls actual_brightness brightness max_brightness subsystem uevent bl_power device power type user@Qosmio-X75-A:/sys/class/backlight/intel_backlight$ cat max_brightness 5273 user@Qosmio-X75-A:/sys/class/backlight/intel_backlight$ cd .. user@Qosmio-X75-A:/sys/class/backlight$ ls acpi_video0 intel_backlight user@Qosmio-X75-A:/sys/class/backlight$ cd acpi_video0 user@Qosmio-X75-A:/sys/class/backlight/acpi_video0$ ls actual_brightness brightness max_brightness subsystem uevent bl_power device power type user@Qosmio-X75-A:/sys/class/backlight/acpi_video0$ cat max_brightness 100 user@Qosmio-X75-A:/sys/class/backlight/acpi_video0$ echo 400 brightness bash: brightness: Permission denied user@Qosmio-X75-A:/sys/class/backlight/acpi_video0$ sudo echo 400 brightness bash: brightness: Permission denied user@Qosmio-X75-A:/sys/class/backlight/acpi_video0$ cd .. user@Qosmio-X75-A:/sys/class/backlight$ ls acpi_video0 intel_backlight user@Qosmio-X75-A:/sys/class/backlight$ cd intel_backlight user@Qosmio-X75-A:/sys/class/backlight/intel_backlight$ ls actual_brightness brightness max_brightness subsystem uevent bl_power device power type user@Qosmio-X75-A:/sys/class/backlight/intel_backlight$ cat brightness 5100 user@Qosmio-X75-A:/sys/class/backlight/intel_backlight$ sudo echo 400 brightness bash: brightness: Permission denied user@Qosmio-X75-A:/sys/class/backlight/intel_backlight$ sudo echo 600 brightness bash: brightness: Permission denied (see attachment of acpidump.txt) ** Attachment added: acpidump.txt https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1295141/+attachment/4094303/+files/acpidump.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1295141 Title: Toshiba Qosmio X75-A7298 - Can't Adjust Brightness To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1295141/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1295141] Re: Toshiba Qosmio X75-A7298 - Can't Adjust Brightness
In this post I'm attaching an image of the keyboard layout. ** Attachment added: X75-A7298-keyboard.png https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1295141/+attachment/4094326/+files/X75-A7298-keyboard.png -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1295141 Title: Toshiba Qosmio X75-A7298 - Can't Adjust Brightness To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1295141/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1295141] Re: Toshiba Qosmio X75-A7298 - Can't Adjust Brightness
The echo's Aaron Lu suggested did indeed adjust the brightness after trying them with root shell: user@Qosmio-X75-A:/sys/class/backlight/intel_backlight$ sudo -s [sudo] password for user: root@Qosmio-X75-A:/sys/devices/pci:00/:00:02.0/drm/card0/card0-eDP-1/intel_backlight# ls actual_brightness brightness max_brightness subsystem uevent bl_power device power type root@Qosmio-X75-A:/sys/devices/pci:00/:00:02.0/drm/card0/card0-eDP-1/intel_backlight# cat max_brightness 5273 root@Qosmio-X75-A:/sys/devices/pci:00/:00:02.0/drm/card0/card0-eDP-1/intel_backlight# echo 400 brightness root@Qosmio-X75-A:/sys/devices/pci:00/:00:02.0/drm/card0/card0-eDP-1/intel_backlight# echo 4000 brightness root@Qosmio-X75-A:/sys/devices/pci:00/:00:02.0/drm/card0/card0-eDP-1/intel_backlight# You'll also notice that I've attached photos of the keyboard (in post#6), as I couldn't imagine how you'd implement the proper mappings without seeing the symbols shown on the keys themselves. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1295141 Title: Toshiba Qosmio X75-A7298 - Can't Adjust Brightness To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1295141/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1295141] Re: Toshiba Qosmio X75-A7298 - Can't Adjust Brightness
** Bug watch added: Linux Kernel Bug Tracker #72551 http://bugzilla.kernel.org/show_bug.cgi?id=72551 ** Also affects: linux via http://bugzilla.kernel.org/show_bug.cgi?id=72551 Importance: Unknown Status: Unknown -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1295141 Title: Toshiba Qosmio X75-A7298 - Can't Adjust Brightness To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1295141/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1295141] Re: Toshiba Qosmio X75-A7298 - Can't Adjust Brightness
Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v3.14 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/v3.14-rc7-trusty/ ** 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/1295141 Title: Toshiba Qosmio X75-A7298 - Can't Adjust Brightness To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1295141/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1295141] Re: Toshiba Qosmio X75-A7298 - Can't Adjust Brightness
I've just got through testing this with 3.14.0-031400rc7-generic. The issue remains. FN-F2, which is supposed to dim the screen, does nothing. FN-F3, which is suppose to brighten the screen, puts the laptop into hibernation. When I come out of hibernation, I'm unable to type my password (typing doesn't work) and have to restart the computer. ** 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/1295141 Title: Toshiba Qosmio X75-A7298 - Can't Adjust Brightness To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1295141/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
