slidewhe.blogg.se - Dell bios password generator

I can not access any drives (CD, Hard-drive, floppy-drive) nor can I access CMOS-Setup.

So I have prepared a patch series to try again with 6.2 by making native be preferred over vendor, which should avoid the problems seen with the 6.1 changes before the fixes.I purchased a Dell Latitude C600/C500 model PP01L at the Salvation Army's outlet store. This first round of testing has shown that native works well even on systems so old that they don't have acpi_video backlight control support. This is undesirable and having more then 1 backlight device for a single panel also blocks the new backlight userspace API work which I have planned. The fixes for 6.1 restore the behavior where userspace can see multiple entries under "/sys/class/backlight" for a single panel and the kernel leaves figuring out which one actually works up to userspace.

Sony Vaio PCG-FRV3 (native backlight control does not work, BIOS from 2003!).

Dell Latitude D610 (native backlight confirmed to also work).

Asus EeePC 901 (native backlight confirmed to work better then vendor).

The following laptop models use vendor backlight control method, while also having a native backlight entry under /sys/class/backlight:.

This model already has a DMI quirk for this, so it is unaffected.

The Dell Inspiron N4010 has acpi_video support and acpi_osi_is_win8() returns false, so acpi_video_get_backlight_type() returns acpi_video, but acpi_video fails to register a backlight device due to a _BCM eval error.

Known Windows laptop models affected by this:.

More detailed summary/analysis of the received test reports:

I have submitted a patch-set for 6.1 upstream to fix this. These tests show that as a result of the current 6.1 changes quite a few laptop models will end up with an empty "/sys/class/backlight", breaking users ability to control their laptop panel's brightness. Many thanks to everyone who has run the tests and send me their results! I have received quite a few test reports in response to my previous blog post.