From mboxrd@z Thu Jan 1 00:00:00 1970 From: pavel@ucw.cz (Pavel Machek) Date: Wed, 1 Aug 2018 20:58:29 +0200 Subject: v4.18-rc2 on droid4: screen turns red In-Reply-To: <20180717062608.GY99251@atomide.com> References: <20180630131812.GA549@amd> <20180711102655.GA6864@amd> <20180717062608.GY99251@atomide.com> Message-ID: <20180801185829.GD26087@amd> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hi! > > > After longer inactivity, attempt to wake up the screen results in > > > screen being completely red. Not too useful. I can still connect over > > > ssh. > > > > Still there in -rc4 :-(. But happens only once in a few days for me... > > > > When X is shut down, text console works ok. > > FYI, I've been chasing an occasional hang with lapdock and it might > be related to the usb phy switching between usb and uart mode > spontaneously. And then the usb traffic can cause a sysrq trigger > potentially when the glitch happens. Not sure yet why it happens, it > might be related to lost cpcap interrupts still. > > Anyways, so far looks like doing the following may have prevented > it. Well at least for about four days of uptime now: > > # echo 0 > /proc/sys/kernel/sysrq > > And no red screens here yet either. Care to check if this might > somehow also prevent your red screen issue? Looks like red screens are pretty seldom :-(. I did not see it since that report. (But I stopped using Droid 4 as my primary phone after it lost some SMS.) Best regards, Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 181 bytes Desc: Digital signature URL: