[i830] Gradient banding on Dell Latitude C400
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
xserver-xorg-video-intel (Ubuntu) |
Expired
|
Undecided
|
Unassigned | ||
Bug Description
Binary package hint: xserver-
My Dell Latitude C400 uses an Intel i830M chipset. The display is configured at 1024x768, 60 Hz, 24-bit -- however, when I look at any kind of gradient, I see "banding" instead of a smooth transition between colors. I think this is because this graphics card does not support true 24-bit color, but 18-bit with dithering -- but I don't think the driver is enabling dithering for my chipset, and there is no way to force it in xorg.conf (unlike the driver for some other chips).
xserver-
Installed: 2:2.4.1-1ubuntu10
[lspci]
00:00.0 Host bridge [0600]: Intel Corporation 82830 830 Chipset Host Bridge [8086:3575] (rev 04)
00:02.0 VGA compatible controller [0300]: Intel Corporation 82830 CGC [Chipset Graphics Controller] [8086:3577] (rev 04)
Subsystem: Dell Device [1028:00c8]
Changed in xserver-xorg-video-intel: | |
status: | New → Incomplete |
description: | updated |
tags: | added: jaunty karmic |
Changed in xserver-xorg-video-intel (Ubuntu): | |
status: | Confirmed → Incomplete |
Changed in xserver-xorg-video-intel (Ubuntu): | |
status: | Incomplete → Confirmed |
summary: |
- [i830] Gradient banding on Dell Latitude C400 + [i830] [i830] Gradient banding on Dell Latitude C400 |
summary: |
- [i830] [i830] Gradient banding on Dell Latitude C400 + [i830] Gradient banding on Dell Latitude C400 |
tags: | added: hardy |
Thank you for reporting this bug. Could you please attach the following:
- output of `lspci -vvnn`
- /var/log/Xorg.0.log
Also, you have quite a lot of stuff in your xorg.conf. X should have reasonable defaults nowadays. Does anything change if you rename xorg.conf and restart X (e.g. by logging out and in again)?