https://bugzilla.novell.com/show_bug.cgi?id=841644 https://bugzilla.novell.com/show_bug.cgi?id=841644#c1 Jiri Srain changed: What |Removed |Added ---------------------------------------------------------------------------- Component|Bootloader |Kernel AssignedTo|jsrain@suse.com |kernel-maintainers@forge.pr | |ovo.novell.com QAContact|jsrain@suse.com |qa-bugs@suse.de --- Comment #1 from Jiri Srain 2013-09-24 13:00:18 UTC --- Adding any boot parameters is a workardoun - and you should only do it when needed (which means, there is no point on doing that on all systems automatically). The rest should IMO be fixed in kernel. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

https://bugzilla.novell.com/show_bug.cgi?id=841644 https://bugzilla.novell.com/show_bug.cgi?id=841644#c2 Joey Lee changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |NEEDINFO InfoProvider| |soshial.reg@gmail.com --- Comment #2 from Joey Lee 2013-09-29 13:06:03 UTC --- Hi, Please try 'acpi_backlight=vendor' kernel parameter. It will fallback to Intel video driver for control backlight. We try to move all Windows 8 machine to run Intel video driver path because more and more manufacturers didn't test ACPI interface due to follow Microsoft WDDM spec. Unfortunately we found some issue causes by Intel video driver doesn't well take care the backlight, it causes Linus revoke patch in v3.11 kernel. Anyway, before Intel video driver fix issue, on those machine that has broken ACPI method. The way to try it is: + first: try 'acpi_backlight=vendor' + second: try acpi_osi="!Windows 2012" -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

https://bugzilla.novell.com/show_bug.cgi?id=841644 https://bugzilla.novell.com/show_bug.cgi?id=841644#c4 L S changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEEDINFO |NEW InfoProvider|soshial.reg@gmail.com | --- Comment #4 from L S 2013-10-04 15:04:08 UTC --- Putting these commands as boot parameters: 1. acpi_backlight=asus didn't change anything. 2. acpi_backlight=vendor did make: * screen brightness stop working * keyboard backlight still not working * volume, wifi on/off still work 3. acpi_osi="!Windows 2012" didn't change anything PS. This is a second comment. Please don't miss previous one. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.