<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - /sys/class/backlight/nv_backlight doesn't work on Dell Precision 7530 GP107GLM [Quadro P1000 Mobile]" href="https://bugs.freedesktop.org/show_bug.cgi?id=110407#c2">Comment # 2</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - /sys/class/backlight/nv_backlight doesn't work on Dell Precision 7530 GP107GLM [Quadro P1000 Mobile]" href="https://bugs.freedesktop.org/show_bug.cgi?id=110407">bug 110407</a> from <a class="email" href="mailto:kai.heng.feng@canonical.com" title="Kai-Heng Feng <kai.heng.feng@canonical.com>"> Kai-Heng Feng</a> <pre>(In reply to Ilia Mirkin from <a href="show_bug.cgi?id=110407#c1">comment #1</a>) > When in non-switchable mode, are there other things in /sys/class/backlight? > e.g. acpi_video0? No, nv_backlight (or nvidia_0) is the only interface. I also tried to call _BCM directly via acpidbg, but both Intel's and Nvidia's _BCM method changes nothing. Please refer to the original bug report [1]. > > Also, presumably this is on v5.0 or later? Prior to that, there was no > backlight support for Pascal. Yes, on both v5.0 and linux-next. [1] <a href="https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1821882">https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1821882</a></pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>