Thanks for you help, I update my BIOS to A29: command: sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date output: A29 06/04/2013
File dmesg contains the same text: [Firmware Bug]: ACPI: BIOS _OSI(Linux) query ignored ... [Firmware Bug]: Duplicate ACPI video bus devices for the same VGA controller, please try module parameter "video.allow_duplicates=1"if the current driver doesn't work. I also boot again with version 13.04 I burn yesterday on USB and there is the same result. But I don't have problem: video works ok and webcam too. When I start using Ubuntu, with 11.10 version, I supposed this message was important to be known and resolved, but I never had problem. So, maybe this is not a real bug and you can close it. In that case, sorry I waste your time and thanks for your patience. I attach dmesg of Ubuntu 13.04 ** Attachment added: "Ubuntu 13.04 dmesg file" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/995456/+attachment/3939707/+files/dmesg -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/995456 Title: Duplicate ACPI video bus devices for the same VGA controller To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/995456/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
