<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_REOPENED " title="REOPENED --- - [HSW bisected]igt/module_reload causes [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004 and system hang with headless, with power well disabled" href="https://bugs.freedesktop.org/show_bug.cgi?id=67813#c45">Comment # 45</a> on <a class="bz_bug_link bz_status_REOPENED " title="REOPENED --- - [HSW bisected]igt/module_reload causes [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004 and system hang with headless, with power well disabled" href="https://bugs.freedesktop.org/show_bug.cgi?id=67813">bug 67813</a> from <a class="email" href="mailto:przanoni@gmail.com" title="Paulo Zanoni <przanoni@gmail.com>"> Paulo Zanoni</a> <pre>(In reply to <a href="show_bug.cgi?id=67813#c44">comment #44</a>) > I've pushed a completely untested patch series to just shut up vgacon to > > <a href="http://cgit.freedesktop.org/~danvet/drm/log/?h=vgacon-crap">http://cgit.freedesktop.org/~danvet/drm/log/?h=vgacon-crap</a> Just to document the bug what I said on IRC: this doesn't fix the bug. Function do_unregister_con_driver() returns -ENODEV, so we don't really unbind vgacon. This happens because vgacon doesn't have the CON_DRIVER_FLAG_MODULE flag. The vgacon is not initalized by do_register_con_driver(), it's initialized by con_init(), though the "conswitchp" variable which is initalized by arch/x86/kernel/setup.c. I am not sure if it's possible to just uninitialize vgacon...</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>