I'm afraid it's not that simple...
If you use the "radeon" driver for Xorg, then you need DRI to get
Xvideo. To get DRI you need the DRM device, which is provided by OpenBSD
- and this driver is some steps behind the X driver regarding supported
chips.
Currently the DRM driver only supports Radeon chips up R5xx; the most
recent cards you could use would be the X1900 / X1950 series.
Newer cards do also work, but as I said you won't have DRI = Xvideo.
long story:
1. Find out what chip your card is using:
http://en.wikipedia.org/wiki/Comparison_of_ATI_Graphics_Processing_Units
2. check if your chip is supported by OpenBSD / DRM:
http://www.openbsd.org/cgi-bin/cvsweb/src/sys/dev/pci/drm/radeon_drv.c
3. Check if the Xorg driver (radeon) supports your card (it usually does
if OpenBSD/DRM also already supports it):
http://xorg.freedesktop.org/wiki/radeon
4. If the Xorg (radeon) driver in your OpenBSD installation is not
recent enough, then get the new one through git and compile it yourself.
Btw, the screen resolution should work (without Xvideo...); I'm
currently running a dual screen (2x 1920x1080) on a Radeon 3650.
regards,
Robert
Timo MyyrC$ wrote:
Hi,
This is pretty much driver specific question but I think the OpenBSD
doesn't support that card out of box.
The git repo of radeonhd and radeon drivers have support for the 4870
if I remember correctly so if your interrested in building the drivers
yourself it should support your card.
I would have suggested that you get Radeon 3870 as it will have driver
and would be pretty powerful card itself.
Timo M
On Tue, Aug 11, 2009 at 11:10 PM, Sviatoslav Chagaev<[email protected]> wrote:
Hello,
I want to buy a new video card, and I'm considering ATI Radeon HD 4870.
On UNIX (OpenBSD that is), I need the card to:
* be capable of 1920x1...@60hz resolution on DVI-D
* have 2D acceleration (including X-Video)
3D acceleration would be nice but is not required.
I dual-boot for games, so buying something older won't do, I need
fairly modern and powerful hardware.
My motherboard (ASUS M3N78-EM) has a GeForce 8300 chipset (not
supported by "open source"/magic-number nv driver, and I couldn't force
vesa driver to 1920x1080), I'm intending to run OpenBSD/amd64.
So, will 4870 work okay in OBSD? If not, could you please suggest
something that would meet the two above-mentioned criteria and be
powerful enough for gaming?
Thanks!
--
Sviatoslav Chagaev <[email protected]>
