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Date:      Sat, 12 Dec 2015 12:54:59 -0500
From:      Michael Powell <nightrecon@hotmail.com>
To:        freebsd-questions@freebsd.org
Subject:   Re: problems running OpenGL code
Message-ID:  <n4hn2p$jpe$1@ger.gmane.org>
References:  <566C3DAD.8090809@hiwaay.net> <20151212173509.fba928df.freebsd@edvax.de> <566C51CB.8040604@hiwaay.net> <566C536F.8080507@hiwaay.net> <n4hla4$hkm$3@ger.gmane.org> <566C5C67.9070704@hiwaay.net>

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William A. Mahaffey III wrote:

[snip]
>> What I don't have any clue is the exact support for the specific chip you
>> are trying to use; it may not exist yet or may be a WIP. Maybe there is
>> some bleeding edge patch or code around somewhere you can try if nothing
>> currently in Release is working.
>>
>> -Mike
> 
> I just looked at both links & the 2nd one appears to say my video is not
> supported. It didn't mention my exact hardware, but said:
> 
> 
> AMD
> 
> Radeon HD 8000
> 
> Sea Islands
> 
> Not supported
> 
> My xorg.conf shows:
> 
> 
> Section "Device"
>          ### Available Driver options are:-
>          ### Values: <i>: integer, <f>: float, <bool>: "True"/"False",
>          ### <string>: "String", <freq>: "<f> Hz/kHz/MHz"
>          ### [arg]: arg optional
>          #Option     "ShadowFB"                  # [<bool>]
>          #Option     "DefaultRefresh"            # [<bool>]
>          #Option     "ModeSetClearScreen"        # [<bool>]
>          Identifier  "Card0"
>          Driver      "vesa"
>          VendorName  "Advanced Micro Devices, Inc. [AMD/ATI]"
>          BoardName   "Kabini [Radeon HD 8280 / R3 Series]"
>          BusID       "PCI:0:1:0"
> EndSection
> 
> 
> So I guess I am hosed. However .... I thought the VESA driver would at
> least provide basic (albeit brutally slow/choppy/etc) functionality,
> wrong there as well ? Thanks & TIA & have a good one :-).
> 

VESA should show you a screen, which should be perhaps useable for text-mode 
CLI and maybe some basic graphics (slow, very slow, as in repaint entire 
screen line by line for any update). I have an old laptop with an ancient 
radeon chip which is so old support has actually been removed so that VESA 
is the only way I can use it. It does work with GUI desktops, just slowly.

VESA mode(s) will never give you any support for GL and there won't be any 
way (to my limited knowledge) to run code that depends on GL libraries.

-Mike






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