<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW --- - Backlight too dim to use from kernel 3.14 and systemd error" href="https://bugs.freedesktop.org/show_bug.cgi?id=78200#c1">Comment # 1</a> on <a class="bz_bug_link bz_status_NEW " title="NEW --- - Backlight too dim to use from kernel 3.14 and systemd error" href="https://bugs.freedesktop.org/show_bug.cgi?id=78200">bug 78200</a> from <a class="email" href="mailto:mike.cloaked@gmail.com" title="Mike C <mike.cloaked@gmail.com>"> Mike C</a> <pre>After update to kernel 3.14.2-1-ARCH the corresponding section of the journal is: May 02 20:32:34 samsung1 systemd[1]: Starting system-systemd\x2dbacklight.slice. May 02 20:32:34 samsung1 systemd[1]: Created slice system-systemd\x2dbacklight.slice. May 02 20:32:34 samsung1 systemd[1]: Starting Load/Save Screen Backlight Brightness of backlight:intel_backlight... May 02 20:32:35 samsung1 kernel: microcode: CPU1 sig=0x6e8, pf=0x20, revision=0x39 May 02 20:32:35 samsung1 kernel: microcode: Microcode Update Driver: v2.00 <<a href="mailto:tigran@aivazian.fsnet.co.uk">tigran@aivazian.fsnet.co.uk</a>>, Peter Oruba May 02 20:32:35 samsung1 kernel: psmouse serio4: synaptics: Touchpad model: 1, fw: 6.2, id: 0x25a0b1, caps: 0xa04713/0x200000/0x0, board May 02 20:32:35 samsung1 kernel: input: SynPS/2 Synaptics TouchPad as /devices/platform/i8042/serio4/input/input16 May 02 20:32:35 samsung1 kernel: mousedev: PS/2 mouse device common for all mice May 02 20:32:35 samsung1 systemd[1]: Started Load/Save RF Kill Switch Status of rfkill0. May 02 20:32:35 samsung1 systemd[1]: Started Load/Save Screen Backlight Brightness of backlight:intel_backlight. The screen dims to an unusable, but not quite black, level during the early phases of boot. If I use the Fn+up arrow key clicked once only the brightness returns to full but a short time later it dims again when the login screen for KDE is presented. I can use the keyboard to again return the brightness to full, and can then login to KDE. At the point where KDE is logged in the screen again dims to unusable, but I can still use the keyboard to set the brightness up again. I have systemd as a mkinitcpio hook, and I will replace that with udev and base and see if that makes any difference.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are the assignee for the bug.</li> </ul> </body> </html>