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guillaumezin / nvidiabl

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Brightness is reset to maximum without notice #32

Closed jroimartin closed 12 years ago

jroimartin commented 12 years ago

Hello,

The brightness is reset to the maximum value without notice. I've seen this behavior, for instance, when you set the brightness from a tty and then execute "startx", when you get into Xorg "cat /sys/class/backlight/nvidia_backlight/brightness" reports the last value (e.g. 42) but the screen is working with maximum brightness. In fact, if you exec "nvidia_backlight_down.sh" once, the value is updated to "117", which confirms that the last real value was "127".

Thanks in advance and keep up the good work!

Some info about my system:

$ dmesg | grep nvidiabl [ 6.505167] nvidiabl: loading driver version 0.73 [ 6.505198] nvidiabl: Supported Nvidia graphics adapter 10de:06e9:103c:1505 detected [ 6.505374] nvidiabl: backup register value 0x400 [ 6.505379] nvidiabl: autodetecting maximum [ 6.505383] nvidiabl: using value 0x400 as maximum [ 6.505387] nvidiabl: autodetecting off [ 6.505391] nvidiabl: using value 0x0 as off [ 6.505395] nvidiabl: autodetecting minimum [ 6.505399] nvidiabl: minimum is 5% of maximum [ 6.505403] nvidiabl: using value 0x64 as minimum

$ lspci | grep VGA 01:00.0 VGA compatible controller: NVIDIA Corporation G98 [GeForce 9300M GS](rev a1)

$ uname -a Linux wopr 3.3.2-1-ARCH #1 SMP PREEMPT Sat Apr 14 09:48:37 CEST 2012 x86_64 Intel(R) Core(TM)2 Duo CPU T5800 @ 2.00GHz GenuineIntel GNU/Linux

$ Xorg -version X.Org X Server 1.12.1 Release Date: 2012-04-13 X Protocol Version 11, Revision 0 Build Operating System: Linux 3.3.1-1-ARCH x86_64 Current Operating System: Linux wopr 3.3.2-1-ARCH #1 SMP PREEMPT Sat Apr 14 09:48:37 CEST 2012 x86_64 Kernel command line: root=/dev/sda5 resume=/dev/sda6 vga=792 acpi_backlight=vendor ro Build Date: 14 April 2012 07:09:45AM

Current version of pixman: 0.24.4 Before reporting problems, check http://wiki.x.org to make sure that you have the latest version.

$ cat /boot/grub/menu.lst ... kernel /boot/vmlinuz-linux root=/dev/sda5 resume=/dev/sda6 vga=792 acpi_backlight=vendor ro ...

Laptop Model: HP Pavilion dv3540es

tapir commented 8 years ago

@jroimartin since you closed this I'm assuming you have found a solution? Would you care to share? I'm having the exact same problem.

Thanks