Hi, finally I could downgrade the firmware, but not with this version of bios, I search in this ftp and find the bios f.13 and it allow me to downgrade it without problems. Here you have the link for bios Phoenix F.13 from the hp fpt: ftp://ftp.hp.com/pub/softpaq/sp34001-34500/sp34098.exe
-- Brightness control via ACPI in HP notebooks https://bugs.launchpad.net/bugs/82188 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
