<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_ASSIGNED " title="ASSIGNED --- - After suspend/resume, screen is black for all but the highest levels with i915 driver on MacBook Air 6,2" href="https://bugs.freedesktop.org/show_bug.cgi?id=67454#c91">Comment # 91</a> on <a class="bz_bug_link bz_status_ASSIGNED " title="ASSIGNED --- - After suspend/resume, screen is black for all but the highest levels with i915 driver on MacBook Air 6,2" href="https://bugs.freedesktop.org/show_bug.cgi?id=67454">bug 67454</a> from <a class="email" href="mailto:directrandom@gmail.com" title="directrandom@gmail.com">directrandom@gmail.com</a> <pre>(In reply to <a href="show_bug.cgi?id=67454#c78">comment #78</a>) > I've managed to work around the issue by programming the backlight driver > directly. This is not an optimal solution but consider it a workaround for > now. I've written a driver and tested it on my MBA 6,2 but the 6,1 should > work as well. Use it at your own risk, I take no responsibility. Don't try > to load this driver unless you have a MacBook Air (mid 2013) 6,1 or 6,2. > > To get it running you need to download and build the driver: > > # git clone <a href="https://github.com/patjak/mba6x_bl">https://github.com/patjak/mba6x_bl</a> > # cd mba6x_bl/ && make && make install > > Make sure the module is loaded at boot time. E.g add "mba6x_bl" to > /etc/modules > You also need to configure i915 to hand over the backlight control to > mba6x_bl. I added this to my /etc/X11/xorg.conf: > > Section "Device" > Identifier "Intel Graphics" > Driver "intel" > Option "Backlight" "mba6x_backlight" > EndSection > > Now reboot and you should have working brightness even after suspend/resume. > Unloading the module (modprobe -r mba6x_bl) will restore the backlight to > whatever state we had when loading it. It doesn't work on my MBA 13 :( (UEFI)</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>