<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO --- - Dual onboard LCD (eDP1 and DP1) cannot turn on DP1 (no backlight), no backlight control but can see screen in reflected light" href="https://bugs.freedesktop.org/show_bug.cgi?id=73156#c17">Comment # 17</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO --- - Dual onboard LCD (eDP1 and DP1) cannot turn on DP1 (no backlight), no backlight control but can see screen in reflected light" href="https://bugs.freedesktop.org/show_bug.cgi?id=73156">bug 73156</a> from <a class="email" href="mailto:tall_axel@web.de" title="Axel <tall_axel@web.de>"> Axel</a> <pre>Hi Jani, thanks for catching my bug report. In response to your question in <a href="https://bugzilla.kernel.org/show_bug.cgi?id=68631#c11">https://bugzilla.kernel.org/show_bug.cgi?id=68631#c11</a> When I boot in normally, without setting the `vendor` flag for acpi_backlight, I can change the *inner* display by setting `acpi_video0/brightness` (with echo). Setting `asus-nb-wmi/brightness` (booted in with `acpi_backlight=vendor`) changes nothing for me (not even the inner display). But the value stored in brightness changes (checked with cat). As I posted earlier in the kernel.org thread, introducing a second `/sys/class/backlight` entry like `acpi_video1` for the outher display might be useful? :)</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are on the CC list for the bug.</li> </ul> </body> </html>