<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO --- - [i915] invert_brightness on "8086:0116:103c:1854" is required" href="https://bugs.freedesktop.org/show_bug.cgi?id=70256#c11">Comment # 11</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO --- - [i915] invert_brightness on "8086:0116:103c:1854" is required" href="https://bugs.freedesktop.org/show_bug.cgi?id=70256">bug 70256</a> from <a class="email" href="mailto:tkhai@yandex.ru" title="Kirill Tkhai <tkhai@yandex.ru>"> Kirill Tkhai</a> <pre>(In reply to <a href="show_bug.cgi?id=70256#c9">comment #9</a>) > (In reply to <a href="show_bug.cgi?id=70256#c8">comment #8</a>) > > (In reply to <a href="show_bug.cgi?id=70256#c5">comment #5</a>) > > > So if you use invert_brightness, the polarity is reversed, right? > > > > Everything is right. Tric from <a class="bz_bug_link bz_status_RESOLVED bz_closed" title="RESOLVED NOTABUG - invert_brightness needed for HP Envy 17 with Haswell processor" href="show_bug.cgi?id=70386">bug 70386</a> doesn't work for me: brightness is > > not remembered between reboots, I have to increase it by hotkeys every boot. > > What? So regardless of i915.invert_brightness setting, your brightness > hotkeys work with the same, correct polarity? In case of i915.invert_brightness set, the polarity is reversed. Ok, it looks like I understood invert_brightness wrong. The real problem is that initial brightness is zero. If I boot without parameters: $ cat /sys/class/backlight/acpi_video0/brightness 0 $ cat /sys/class/backlight/intel_backlight/brightness 0</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>