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From: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
To: Alex Dewar <alex.dewar@gmx.co.uk>
Cc: devel@driverdev.osuosl.org, Heiko Stuebner <heiko@sntech.de>,
	Tomeu Vizoso <tomeu.vizoso@collabora.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	"open list:ARM/Rockchip SoC..."
	<linux-rockchip@lists.infradead.org>,
	Boris Brezillon <boris.brezillon@collabora.com>,
	Philipp Zabel <p.zabel@pengutronix.de>,
	Hans Verkuil <hverkuil-cisco@xs4all.nl>,
	Mauro Carvalho Chehab <mchehab@kernel.org>,
	linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
	linux-media <linux-media@vger.kernel.org>
Subject: Re: [REGRESSION] Xorg segfaults on Asus Chromebook CP101 with Linux v5.2 (was Asus C101P Chromeboot fails to boot with Linux 5.2)
Date: Sat, 13 Jul 2019 19:58:38 -0300
Message-ID: <CAAEAJfAeZaT5wd4k8Lkf6T3G7LpK5LmOOG2ZbVJAQ6Xb7Wtdcw@mail.gmail.com> (raw)
In-Reply-To: <2d52b787-187c-5638-660c-33d51a07770c@gmx.co.uk>

On Sat, 13 Jul 2019 at 13:43, Alex Dewar <alex.dewar@gmx.co.uk> 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

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Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-07-12 15:00 Asus C101P Chromeboot fails to boot with Linux 5.2 Alex Dewar
2019-07-12 15:44 ` Emil Renner Berthing
2019-07-12 16:27   ` Alex Dewar
2019-07-12 22:07     ` Alex Dewar
     [not found]       ` <f47f8759-8113-812a-b17a-4be09665369e@gmx.co.uk>
2019-07-13 14:47         ` [REGRESSION] Xorg segfaults on Asus Chromebook CP101 with Linux v5.2 (was Asus C101P Chromeboot fails to boot with Linux 5.2) Greg Kroah-Hartman
2019-07-13 15:17         ` Heiko Stuebner
2019-07-13 16:43           ` Alex Dewar
2019-07-13 22:58             ` Ezequiel Garcia [this message]

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