From: Michal Srb <msrb@suse.com>
To: Daniel Vetter <daniel@ffwll.ch>
Cc: intel-gfx@lists.freedesktop.org,
dri-devel <dri-devel@lists.freedesktop.org>
Subject: Re: [PATCH] drm/i915: Add i915.dp_limit_max_lane_count driver option.
Date: Tue, 02 Apr 2013 16:06:51 +0200 [thread overview]
Message-ID: <1975951.qvJkaLOmuO@dhcp17> (raw)
In-Reply-To: <CAKMK7uE32swupv9v0PKtcf-uXu=vxGxH0082XqsgZ8exSc8c1w@mail.gmail.com>
On Tuesday 26 of March 2013 16:49:30 Daniel Vetter wrote:
> On Tue, Mar 26, 2013 at 4:40 PM, Michal Srb <msrb@suse.com> wrote:
> > I have IBM POS machine (4852-570 Truman) that has internal monitor
> > connected over display port. It reports to have 2 lanes, but only 1
> > lane works reliably. With 2 lanes used, the monitor sometimes doesn't
> > turn on. It seems that this is hardware issue specific for this model.
> >
> > From discussion that was around the
> > 2514bc510d0c3aadcc5204056bb440fa36845147 commit I understand there are
> > more machines that have similar problems. This option can be used to
> > solve them.
>
> It sounds like we need to start with a DPCD quirk database ... Ajax?
> -Daniel
Any update?
DPCD of this monitor is 10 0a 82 40 00 00 01 00 02 00 00 00 10 01 00 by the
way.
Is the i915.dp_limit_max_lane_count unacceptable even as temporary workaround?
Michal Srb
prev parent reply other threads:[~2013-04-02 14:06 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-26 15:40 [PATCH] drm/i915: Add i915.dp_limit_max_lane_count driver option Michal Srb
2013-03-26 15:49 ` Daniel Vetter
2013-04-02 14:06 ` Michal Srb [this message]
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