Yes, you're right. I just booted up in recovery mode and around the time the screen dimmed, I saw something about acpi video fly up the screen. Where are these boot time messages logged?
After booting up, I have this: [EMAIL PROTECTED]:~$ cat /proc/acpi/video/GFX0/LCD/brightness levels: 100 57 0 14 28 43 57 71 86 100 current: 0 [EMAIL PROTECTED]:~$ If I use the Fn keys to increase the brightness to 100, I get this: [EMAIL PROTECTED]:~$ cat /proc/acpi/video/GFX0/LCD/brightness levels: 100 57 0 14 28 43 57 71 86 100 current: 100 [EMAIL PROTECTED]:~$ If I unplug the AC power, I get this: [EMAIL PROTECTED]:~$ cat /proc/acpi/video/GFX0/LCD/brightness levels: 100 57 0 14 28 43 57 71 86 100 current: 43 [EMAIL PROTECTED]:~$ When I plug AC power back in, I get this: [EMAIL PROTECTED]:~$ cat /proc/acpi/video/GFX0/LCD/brightness levels: 100 57 0 14 28 43 57 71 86 100 current: 86 [EMAIL PROTECTED]:~$ And when I unplug it again: [EMAIL PROTECTED]:~$ cat /proc/acpi/video/GFX0/LCD/brightness levels: 100 57 0 14 28 43 57 71 86 100 current: 28 [EMAIL PROTECTED]:~$ and plug it in: [EMAIL PROTECTED]:~$ cat /proc/acpi/video/GFX0/LCD/brightness levels: 100 57 0 14 28 43 57 71 86 100 current: 71 [EMAIL PROTECTED]:~$ So, you can see, it's incrementally decreasing every time I unplug AC. So, for me, there's two problems: 1. On boot, brightness is dimmed to 0 2. Unplugging AC repeatedly, incrementally decreases the display brightness. Each problem can be overcome by using the Fn keys after boot and plugging AC back in, but it's clearly not how it should work. Thanks for any help with this. Please point me to logs or anything I can do help debug it further. Joss -- Display brightness requires manual intervention https://bugs.launchpad.net/bugs/241867 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
