Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
Message-ID: <2a52d8bd1b44e5518abb965ef503c2f1014d9829.camel@tiscali.nl>
Subject: Re: screen freeze with 5.2-rc6 Dell XPS-13 skylake  i915
From:   Paul Bolle <pebolle@tiscali.nl>
To:     James Bottomley <James.Bottomley@HansenPartnership.com>
Cc:     linux-kernel <linux-kernel@vger.kernel.org>,
        intel-gfx@lists.freedesktop.org
Date:   Tue, 09 Jul 2019 15:52:19 +0200
In-Reply-To: <1561834612.3071.6.camel@HansenPartnership.com>
References: <1561834612.3071.6.camel@HansenPartnership.com>
Content-Type: text/plain; charset="UTF-8"
User-Agent: Evolution 3.32.3 (3.32.3-1.fc30) 
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

Hi James,

James Bottomley schreef op za 29-06-2019 om 11:56 [-0700]:
> The symptoms are really weird: the screen image is locked in place. 
> The machine is still functional and if I log in over the network I can
> do anything I like, including killing the X server and the display will
> never alter.  It also seems that the system is accepting keyboard input
> because when it freezes I can cat information to a file (if the mouse
> was over an xterm) and verify over the network the file contents. 
> Nothing unusual appears in dmesg when the lockup happens.
> 
> The last kernel I booted successfully on the system was 5.0, so I'll
> try compiling 5.1 to narrow down the changes.

Upgrading to 5.2 (from 5.1.y) on a "Dell XPS 13 9350" (is that a skylake too?)
showed similar symptoms. There's no pattern to the freezes that I can see.
They're rather frequent too (think every few minutes). Eg, two freezes while
composing this message!

My totally silly workaround is suspending (via Fn + Insert) and resuming.

Did you manage to narrow this any further?

Thanks,


Paul Bolle