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a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=C521pemh84hQDpPKGvZwcyDQbmvvEOy9KjEBffRDfy8=; b=X1NX9NEKxGSHQSXewEiRIqaeaTVb7s2Hio1gkyKm3zO+R0rH4/6crEmmp2zgUeeVKV Rmxt02bx+Huw2MK8I/rSBASFCN9FIbqbMNT/nztoXi72EkdPpkIWedXmWi/ezv/6qQCp N3KgDfALVM1GIYQx3QR/+td3ZqMPPwFIBLhfqx6SjBCShiGO4cfMcJOUsBslSY7pFor7 4R4npxmWmCAeJqyQDQ26ZIXJOzadllxyEGHAX0pN7HwuhPTDZK1+ho0wj0NPq9m697qA qsJL3wT+4uzqoyu6Ix7V1uJoOoGSMPX9FHearnp0Din654Jte7s/yRjJmLcQZjNR/5x+ TcXw== X-Gm-Message-State: APjAAAXiN1rN0zWFJzb0evhCQCMsGqxJVyZbPio1+eZCOQJAyGYrDPoz A6oVswpMCE6R7EMmBaZYX4wNPqFOHBX6jYiYYrc= X-Google-Smtp-Source: APXvYqy9iyOxbGuuKGCYA7P9x4/jCssoGs1MvrDafxGacYP2yXkE8lKvX3eDFZmQr3u0yULaYS1miZoz7xW6gN4q6+4= X-Received: by 2002:ab0:2a49:: with SMTP id p9mr12794749uar.0.1563058726092; Sat, 13 Jul 2019 15:58:46 -0700 (PDT) MIME-Version: 1.0 References: <59042b09-7651-be1d-347f-0dc4aa02a91b@gmx.co.uk> <5fe66d5d-0624-323f-3bf8-56134ca85eca@gmx.co.uk> <2648434.ut0pN6mfR1@phil> <2d52b787-187c-5638-660c-33d51a07770c@gmx.co.uk> In-Reply-To: <2d52b787-187c-5638-660c-33d51a07770c@gmx.co.uk> From: Ezequiel Garcia Date: Sat, 13 Jul 2019 19:58:38 -0300 Message-ID: Subject: Re: [REGRESSION] Xorg segfaults on Asus Chromebook CP101 with Linux v5.2 (was Asus C101P Chromeboot fails to boot with Linux 5.2) To: Alex Dewar X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190713_155848_177176_F44DDFB5 X-CRM114-Status: GOOD ( 17.12 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devel@driverdev.osuosl.org, Heiko Stuebner , Tomeu Vizoso , Greg Kroah-Hartman , Linux Kernel Mailing List , "open list:ARM/Rockchip SoC..." , Boris Brezillon , Philipp Zabel , Hans Verkuil , Mauro Carvalho Chehab , linux-arm-kernel , linux-media Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Sat, 13 Jul 2019 at 13:43, Alex Dewar wrote: > > On 13/07/2019 16:17, Heiko Stuebner wrote: > > Hi, > > > > Am Samstag, 13. Juli 2019, 13:38:45 CEST schrieb Alex Dewar: > >> I initially thought my machine was failing to boot entirely, but it > >> turns out it was just failing to start the display manager. I managed to > >> escape to a tty by hammering the keyboard a bit. > >> > >> I suspect the culprit is the rockchip_vpu driver (in staging/media), > >> which has been renamed to hantro in this merge window. When I run startx > >> from a terminal, X fails to start and Xorg segfaults (log here: > >> http://users.sussex.ac.uk/~ad374/xorg.log). X seems to work without any > >> issues in v5.1. > > > > 5.2 also has support for Panfrost (Mali-Midgard GPUs) but I'm not > > sure if it already can support X11 yet and your X11 log mentions > > libglamoregl in the segfault stack trace. > > > > Apart from it bisect that Greg suggested you could also just try > > blacklisting either panfrost or vpu kernel modules > > /etc/udev/somewhere . This would prevent them from loading > > > > Hope that helps > > Heiko > > > > > > Hi Heiko, > > Thanks for this. I blacklisted the panfrost driver and X magically > started working again. > > I'll try to do a bisect later to find the offending commit though. > > In related news, it also seems that the sound and wifi drivers aren't > working either in 5.2 (although I need to do a bit more testing to > confirm the latter). > Adding myself and Tomeu. Perhaps we need to disable Panfrost from defconfig from now? Regards, Eze _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel