Greg KH wrote on 03/07/16 02:14: > On Sun, Mar 06, 2016 at 02:18:31PM +0100, Jörg-Volker Peetz wrote: >> Greg KH wrote on 03/05/16 18:41: >>> >>> Can you use 'git bisect' between 4.4.3 and 4.4.4 to track down the >>> offending patch? >>> >> >> It's one line of code that freezes X during start on my HP Pavilion dv7 hybrid >> graphic (AMD HD 42000 - AMD HD 5400): >> >> # git bisect visualize >> commit b36e52c44ce6728824546d8b5f05b844cede96f1 >> Author: Alex Deucher <alexander.deucher@xxxxxxx> >> Date: Tue Nov 24 14:32:44 2015 -0500 >> >> drm/radeon: call hpd_irq_event on resume >> >> commit dbb17a21c131eca94eb31136eee9a7fe5aff00d9 upstream. >> >> Need to call this on resume if displays changes during >> suspend in order to properly be notified of changes. >> >> Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx> >> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> >> >> Removing the line inserted by this patch from 4.4.4 makes X on my laptop work again. >> Just for the records: with the above patch the laptop freezes during shutdown >> and has to be switched off by pressing the power button several seconds until >> power-off. > > Ah, good to know. Alex, any ideas? > > Also, does this same problem also happen in 4.5-rc7? If so, that's > good. If not, I'm worried that I might have missed a fixup patch > somewhere. > This same problem with X does happen in 4.5-rc7. And removing the line introduced by patch b36e52c44ce6728824546d8b5f05b844cede96f1 makes X go again on my laptop. Best regards, jvp. -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html