[haiku-bugs] Re: [Haiku] #9106: Black screen with 3D Rage Pro AGP 1X/2X
- From: "gerald.zajac" <trac@xxxxxxxxxxxx>
- Date: Sat, 03 Nov 2012 21:39:56 -0000
#9106: Black screen with 3D Rage Pro AGP 1X/2X
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Reporter: Morbid | Owner: gerald.zajac
Type: bug | Status: new
Priority: normal | Milestone: R1
Component: Drivers/Graphics/ati | Version: R1/Development
Resolution: | Keywords: ATI 3d Rage pro
Blocked By: | Blocking:
Has a Patch: 0 | Platform: x86
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Comment (by gerald.zajac):
Are you sure that you are now using the Haiku ati video driver? If you
are using the Haiku ati video driver and you look at the syslog, you
should see several lines in the file that start with "ati:", and one of
them will state the resolution and other info about the mode that is being
set. If you see no lines that start with "ati:", you are not using the
Haiku ati driver.
After doing some investigation, I found that the Fail-Safe video mode
applies only to the boot screen. When the normal Haiku screen appears it
seems to always be the resolution that was used before Haiku was shutdown
or restarted. I had thought that the Fail-Safe mode was also to be used
for the normal Haiku screen, but that is not the case. Consequently,
since you have a 1920x1200 monitor, Haiku could be trying to set the
resolution to 1920x1200 after the boot screen is finished. Since these
ATI 3D Rage chips are rather old chips (about 15 years old), they might
not be able to handle 1920x1200. When I wrote the ati driver, the largest
resolution I tested them with was 1680x1050, and they worked okay at that
resolution. Thus, you should try a monitor with a lower resolution, or
set the video to a lower resolution before you shutdown after using the
Radeon card.
Also, it should be noted that the Radeon chip is not handled by the Haiku
ati driver. Haiku has Radeon and Radeon HD drivers for those chips. If
you want to see which chips are supported by the ati driver, look at the
source file:
http://cgit.haiku-os.org/haiku/tree/src/add-
ons/kernel/drivers/graphics/ati/driver.cpp
Starting at line 73 there is a chip table which gives the chip ID and name
of each chip handled by the ati driver.
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Ticket URL: <http://dev.haiku-os.org/ticket/9106#comment:12>
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