Jano wrote on 2008-12-09: (permalink) Hello, breaking news: I discovered a certain pattern in my laptop's behavior regarding this brightness issue. Whenever a kernel upgrade (from official packages) is performed, the first boot with the new kernel is always good (i.e. i can adjust brightness), while all subsequent boots are NOT. Any ideas why this might be happening?? I'm really puzzled. TIA.
__________________ There recently was an update of an acpi package. I can't remember the name exactly. I remember that the brightness up and down key worked and also that the power detection (removing or connecting power cable) was working good at the first reboot after I upgraded the acpi package. The problem is that it didn't work 'again' from the second boot or all following reboots. I don't know how this acpi stuff works, but could the following be possible? bootsession 1 = power detection and hotkeys working bootsession 2+x = power detection and hotkeys NOT working 1) acpi reads some settings from a certain settings file when the pc boots (bootsession 1). 2) some other piece of power-hotkey-software (which starts after acpi is started) writes some wrong settings to this settings file. (bootsession 1) 3) Kubuntu starts and acpi works. (bootsession 1) 4) Reboot the pc 5) Acpi reads some WRONG settings from a certain settings file when the pc boots (bootsession 2+x) 6) Some other piece of power-hotkey-software (which starts after acpi is started) writes some wrong settings to this settings file. (bootsession 2+x) 7) Kubuntu starts and acpi doesn't work.(bootsession 2+x) 8) Reboot the pc 9) All following reboots are equal to point 5 to 8. 10) When you reïnstall acpi, it writes the good settings to this settings file. 11) Reboot the pc. We can start again from point 1) acpi reads..... -- Can only change brightness on Toshiba Satellite A300 during first boot of new kernel https://bugs.launchpad.net/bugs/297658 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
