<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW --- - [HSW ULT]eDP brightness is zero after the computer start" href="https://bugs.freedesktop.org/show_bug.cgi?id=70791#c3">Comment # 3</a> on <a class="bz_bug_link bz_status_NEW " title="NEW --- - [HSW ULT]eDP brightness is zero after the computer start" href="https://bugs.freedesktop.org/show_bug.cgi?id=70791">bug 70791</a> from <a class="email" href="mailto:qingshuai.tian@intel.com" title="Qingshuai Tian <qingshuai.tian@intel.com>"> Qingshuai Tian</a> <pre>Created <a href="attachment.cgi?id=88097" name="attach_88097" title="dmesg of kernel with the patches">attachment 88097</a> <a href="attachment.cgi?id=88097&action=edit" title="dmesg of kernel with the patches">[details]</a> dmesg of kernel with the patches In the test where I got dmesg in <a href="show_bug.cgi?id=70791#c1">Comment 1</a> , I do have use hot keys to change the brightness , but the monitor didn't brighten up . I tried the patches you gived above with video.use_native_backlight=1 module parameter. But the bug still exit. I am afraid I didn't make it clear that the eDP monitor turn into black when it start to show the grub list. So it's already black before loading in the kernel. I hope this dmesg could be helpful.</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> <li>You are the assignee for the bug.</li> </ul> </body> </html>