From: marex@denx.de (Marek Vasut)
To: linux-arm-kernel@lists.infradead.org
Subject: imx-drm: screen flickering
Date: Wed, 29 Jan 2014 15:53:14 +0100 [thread overview]
Message-ID: <201401291553.15040.marex@denx.de> (raw)
In-Reply-To: <20140129111557.GI16215@pengutronix.de>
On Wednesday, January 29, 2014 at 12:15:57 PM, Sascha Hauer wrote:
> Hi Christian,
>
> On Tue, Jan 28, 2014 at 09:11:32AM +0100, Christian Gmeiner wrote:
> > Hi all.
> >
> > From time to time it happens that my LVDS display is flickering (look
> > at scroll bar in the video).
> > https://drive.google.com/file/d/0B_fznDimUHVubWtvVFlMTkdBbUU/edit?usp=sha
> > ring
> >
> > I really want to find the root cause of it, but I do not know where to
> > start. I can trigger this
> > sometimes after xscreensever "blanks" the screen and the screensafer
> > gets disabled
> > via user input.
> >
> > Any hints?
>
> Sorry, no idea. Philipp and me watched the video, but we both haven't
> seen something like this before.
Isn't it the clock polarity being inverted thing again [1]?
[1] http://lists.infradead.org/pipermail/linux-arm-kernel/2013-
December/215536.html
The easiest way to check this would be to try sig_cfg.clk_pol = 0 or = 1 and see
if it changes anything.
Best regards,
Marek Vasut
next prev parent reply other threads:[~2014-01-29 14:53 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-28 8:11 imx-drm: screen flickering Christian Gmeiner
2014-01-28 8:29 ` Christian Gmeiner
2014-01-28 8:32 ` Christian Gmeiner
2014-01-29 11:15 ` Sascha Hauer
2014-01-29 14:53 ` Marek Vasut [this message]
2014-01-29 16:32 ` Russell King - ARM Linux
2014-01-30 7:45 ` Sascha Hauer
2014-02-01 22:56 ` Marek Vasut
2014-03-24 14:53 ` Christian Gmeiner
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