<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO --- - [gm45] Backlight shuts off during boot when KMS is enabled" href="https://bugs.freedesktop.org/show_bug.cgi?id=53153#c33">Comment # 33</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO --- - [gm45] Backlight shuts off during boot when KMS is enabled" href="https://bugs.freedesktop.org/show_bug.cgi?id=53153">bug 53153</a> from <a class="email" href="mailto:jpabbott02@gmail.com" title="Jay Abbott <jpabbott02@gmail.com>"> Jay Abbott</a> <pre>Okay, so I just tried adjusting the backlight by changing the value in '/sys/class/backlight/acpi_backlight0/backlight', and it had no effect. Seems that the ACPI control for the backlight is the culprit, this would explain why the FN keys fail to frob the brightness. intel_backlight being a fallback, I imagine that during boot, the system tries to set the brightness using the ACPI control and fails? I'll take a look at dmesg and see what I can get out of it...</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>