<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_REOPENED " title="REOPENED - [i915] intel_backlight does not function - Lenovo X1 Yoga OLED" href="https://bugs.freedesktop.org/show_bug.cgi?id=97883#c20">Comment # 20</a> on <a class="bz_bug_link bz_status_REOPENED " title="REOPENED - [i915] intel_backlight does not function - Lenovo X1 Yoga OLED" href="https://bugs.freedesktop.org/show_bug.cgi?id=97883">bug 97883</a> from <a class="email" href="mailto:arkonbob@yahoo.com" title="arkonbob@yahoo.com">arkonbob@yahoo.com</a> <pre>(In reply to Niklas Kielblock from <a href="show_bug.cgi?id=97883#c19">comment #19</a>) > The download above contains debug symbols, so I've done some cursory > analysis. It communicates with the panel via eDP AUX (couldn't say if it's > using I2C-over-AUX, though) through an interface exposed by the primary > Intel graphics driver. References to gamma and voltages (ELVSS) indicate > it's considerably more low-level. > > It's developed by Intel, not a third-party manufacturer; I have no insight > into your organisation so forgive me if I'm wrong but I would imagine you > can inquire about this internally. Do you think the panel on the Asus Taichi might also be controlled in the same way? (<a class="bz_bug_link bz_status_CLOSED bz_closed" title="CLOSED WONTFIX - Dual onboard LCD (eDP1 and DP1) cannot turn on DP1 (no backlight), no backlight control but can see screen in reflected light" href="show_bug.cgi?id=73156">Bug 73156</a> - <a class="bz_bug_link bz_status_CLOSED bz_closed" title="CLOSED WONTFIX - Dual onboard LCD (eDP1 and DP1) cannot turn on DP1 (no backlight), no backlight control but can see screen in reflected light" href="show_bug.cgi?id=73156">https://bugs.freedesktop.org/show_bug.cgi?id=73156</a>) @Jani - if you are able to track someone down at Intel I'd be grateful if you could add that to your list of questions :-)</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are on the CC list for the bug.</li> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>