From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 92977] Display artifacts when using MST Date: Tue, 17 Nov 2015 23:43:51 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============2078847287==" Return-path: Received: from culpepper.freedesktop.org (unknown [131.252.210.165]) by gabe.freedesktop.org (Postfix) with ESMTP id 5591A6E4C5 for ; Tue, 17 Nov 2015 15:43:51 -0800 (PST) In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: dri-devel@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org --===============2078847287== Content-Type: multipart/alternative; boundary="1447803831.AAE5fA0.29882"; charset="UTF-8" --1447803831.AAE5fA0.29882 Date: Tue, 17 Nov 2015 23:43:51 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" https://bugs.freedesktop.org/show_bug.cgi?id=92977 --- Comment #3 from Dan Doel --- I realized I'd forgotten a couple potentially relevant details. First, the duplication artifact seems to be related to the overall coordinates. I switched cables (and thus DP outputs) at the monitors, but putting the desktop in the same layout gives the same artifacts. Also swapping things so that the right half of the monitor is logically to the left of the left half seems to switch the duplication artifacts (i.e. they happen at roughly the same logical coordinates, not physical coordinates). Second, my card is a Radeon 7870, for reference. Also, I've now tried the modesetting driver (so that I can have the tiled displays work as one logical display), and experience the same anomalies with it; both color depth mismatch on the left monitor (I previously described it as 'primary', but perhaps it is more relevant that it is the monitor with a +0 X offset), and the duplication on the right monitor (with a +3840 X offset) occur. So the problem is not specific to the xf86-video-ati portion of the driver. -- You are receiving this mail because: You are the assignee for the bug. --1447803831.AAE5fA0.29882 Date: Tue, 17 Nov 2015 23:43:51 +0000 MIME-Version: 1.0 Content-Type: text/html; charset="UTF-8"

Comment # 3 on bug 92977 from 
I realized I'd forgotten a couple potentially relevant details.

First, the duplication artifact seems to be related to the overall coordinates.
I switched cables (and thus DP outputs) at the monitors, but putting the
desktop in the same layout gives the same artifacts. Also swapping things so
that the right half of the monitor is logically to the left of the left half
seems to switch the duplication artifacts (i.e. they happen at roughly the same
logical coordinates, not physical coordinates).

Second, my card is a Radeon 7870, for reference.

Also, I've now tried the modesetting driver (so that I can have the tiled
displays work as one logical display), and experience the same anomalies with
it; both color depth mismatch on the left monitor (I previously described it as
'primary', but perhaps it is more relevant that it is the monitor with a +0 X
offset), and the duplication on the right monitor (with a +3840 X offset)
occur. So the problem is not specific to the xf86-video-ati portion of the
driver.

You are receiving this mail because:
  • You are the assignee for the bug.
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