<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO --- - [ivb regression] Dell Latitude 6430u failed to boot without nomodeset - since 3.16-rc5" href="https://bugs.freedesktop.org/show_bug.cgi?id=82439#c6">Comment # 6</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO --- - [ivb regression] Dell Latitude 6430u failed to boot without nomodeset - since 3.16-rc5" href="https://bugs.freedesktop.org/show_bug.cgi?id=82439">bug 82439</a> from <a class="email" href="mailto:lv.zheng@intel.com" title="Lv Zheng <lv.zheng@intel.com>"> Lv Zheng</a> <pre>The first affection is: <a href="https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=1bb9e632a0aeee1121e652ee4dc80e5e6f14bcd2">https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=1bb9e632a0aeee1121e652ee4dc80e5e6f14bcd2</a> commit 1bb9e632a0aeee1121e652ee4dc80e5e6f14bcd2 Author: Daniel Vetter <<a href="mailto:daniel.vetter@ffwll.ch">daniel.vetter@ffwll.ch</a>> Subject: drm/i915: Only unbind vgacon, not other console drivers The console subsystem only provides a function to switch to a given console, but we want to actually only switach away from vgacon. Unconditionally switching to the dummy console resulted in switching away from fbcon in multi-gpu setups when other gpu drivers are loaded before i915. Then either the reinitialization of fbcon when i915 registers its fbdev emulation or the teardown of the fbcon driver killed the machine. So only switch to the dummy console when it's required. Kudos to Chris for the original idea, I've only refined it a bit to still unregister vgacon even when it's currently unused. This regression has been introduced in commit a4de05268e674e8ed31df6348269e22d6c6a1803 Author: Daniel Vetter <<a href="mailto:daniel.vetter@ffwll.ch">daniel.vetter@ffwll.ch</a>> Date: Thu Jun 5 16:20:46 2014 +0200 drm/i915: Kick out vga console Reported-and-tested-by: Ed Tomlinson <<a href="mailto:edt@aei.ca">edt@aei.ca</a>> Cc: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>> Cc: David Herrmann <<a href="mailto:dh.herrmann@gmail.com">dh.herrmann@gmail.com</a>> Reviewed-by: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>> Reviewed-by: David Herrmann <<a href="mailto:dh.herrmann@gmail.com">dh.herrmann@gmail.com</a>> Signed-off-by: Daniel Vetter <<a href="mailto:daniel.vetter@ffwll.ch">daniel.vetter@ffwll.ch</a>></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> </ul> </body> </html>