Bug 31203

Summary:

[HD 2400 XT] iMac has wavy lines on the screen

Product:

xorg

Reporter:

Vasyl Demin <vasyl.demin>

Component:

Driver/Radeon

Assignee:

xf86-video-ati maintainers <xorg-driver-ati>

Status:

RESOLVED INVALID

QA Contact:

Xorg Project Team <xorg-team>

Severity:

normal

Priority:

medium

CC:

vasyl.demin

Version:

unspecified

Hardware:

x86-64 (AMD64)

OS:

Linux (All)

Whiteboard:

i915 platform:

i915 features:

Attachments:

Description	Flags
xorg.conf	none
Xorg.0.log	none
lspci -vnn	none
video bios	none
dmesg	none

Description Vasyl Demin 2010-10-28 08:46:00 UTC

Computer: iMac 8,1 20"
Video: ATI Radeon HD 2400 XT
OS: Arch Linux x86_64
xorg-server: 1.9.0

The display has a strange moiré-like effect (picture looks "instable", like the surface of disturbed water), that is not present under MacOS 10.5.

There are light vertical wavy floating lines visible on the screen. They are more clearly seen when you look the screen at an angle, from down below you look upwards to the screen. The floating lines can be precisely seen on grey backgrounds. These lines are not noticable much, but when you closely look with grey backgrounds, they are visible.

The problem is observed on the different drivers:
xf86-video-ati 6.13.2 (with or without KMS)
catalyst 10.10
vesa 2.3.0

Comment 1 Vasyl Demin 2010-10-28 08:47:04 UTC

Created attachment 39866 [details]
xorg.conf

Comment 2 Vasyl Demin 2010-10-28 08:52:14 UTC

Created attachment 39867 [details]
Xorg.0.log

Comment 3 Vasyl Demin 2010-10-28 08:54:29 UTC

Created attachment 39868 [details]
lspci -vnn

Comment 4 Vasyl Demin 2010-10-28 08:59:47 UTC

Created attachment 39869 [details]
video bios

Comment 5 Vasyl Demin 2010-10-28 09:06:58 UTC

I've tried different resolutions, but it did not help.

Comment 6 Alex Deucher 2010-10-28 09:25:28 UTC

What kernel are you using?  Can you attach your dmesg output?  Does booting with radeon.new_pll=0 on the kernel command line help?

Comment 7 Vasyl Demin 2010-10-29 02:26:59 UTC

Alex, thanks for fast reply!

I'm using the 2.6.35.7 kernel.

Comment 8 Vasyl Demin 2010-10-29 02:27:53 UTC

Created attachment 39882 [details]
dmesg

Comment 9 Vasyl Demin 2010-10-29 02:45:54 UTC

I booted with "radeon.new_pll=0" and later with "nomodeset radeon.new_pll=0", but nothing helped.

Comment 10 Adam Jackson 2018-06-12 19:09:56 UTC

Mass closure: This bug has been untouched for more than six years, and is not
obviously still valid. Please reopen this bug or file a new report if you continue to experience issues with current releases.

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