+Lee, the acer maintainer and sorry for the late reply. On 08/14/2013 12:14 PM, Maximiliano Oropeza wrote: > Ok, now there was a change. In *acer-wmi*, I put: >> root@Dayman:/home/maxo# cd /sys/class/backlight/ >> root@Dayman:/sys/class/backlight# cd /sys/class/backlight/acer-wmi >> root@Dayman:/sys/class/backlight/acer-wmi# cat max_brightness >> 15 >> root@Dayman:/sys/class/backlight/acer-wmi# 10 >> 10: command not found >> root@Dayman:/sys/class/backlight/acer-wmi# echo 5 > brightness >> root@Dayman:/sys/class/backlight/acer-wmi# echo 7 > brightness > and there was no change at all. > > But when I went to *intel_backlight*, I got: >> root@Dayman:/sys/class/backlight/acer-wmi# cd >> /sys/class/backlight/intel_backlight >> root@Dayman:/sys/class/backlight/intel_backlight# cat max_brightness >> 976 >> root@Dayman:/sys/class/backlight/intel_backlight# echo 5 > brightness >> root@Dayman:/sys/class/backlight/intel_backlight# echo 7 > brightness >> root@Dayman:/sys/class/backlight/intel_backlight# > and when I put echo 5 > brightness, the screen went super low, the same
The intel_backlight's max_brightness could be very high so the value 5 or 7 are almost identical to 0, you can try some larger values like 500 or 2000 etc. > with echo 7. I tried changing the brightness using the FN keys and it > went at full brightness and once again I can't lower the brightness to > about half. Same problems as before but *intel_backlight* is the one > that actually changed brightness. Your system needs some quirk I suppose. BTW, your system only have two backlight interfaces acer-mi and intel_backlight, is it booting with acpi_backlight=vendor option? Thanks, Aaron -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1173961 Title: [Gateway NV55C] Two backlight interfaces that wont adjust backlight. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1173961/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
