Though the following has nothing to do with AMD GPU's, it may be of interest.
I will share my config with you with one caveat: I'm from Alabama, and we all
know what that means ... http://marc.info/?l=openbsd-misc&m=139656417532670&w=2
(I still laugh about that one every time I read it -- it's a looonnngggg shot
indeed!!!)  If the following does you no good, I apologize for wasting your
time.

I run OpenBSD current, Windows 8.1, and Linuxmint 17 on my Dell E6520 notebook.
(I am the General Manager of a Commercial Food Equipment company, and I bought
it through the company for work, development, and OpenBSD learning and fun!!)
It has the Nvidia Quadro NVS4200M (Optimus) on board -- see dmesg below.  I
had heat issues as well.  My fix is simple:  In the BIOS (version A19,) under
Performance, I set Multi Core Support to 1 processor,  and I disabled
HyperThread control.  SpeedStep and TurboBoost are still enabled.  My box still
runs like a scalded dog (did all y'all get that? if not, it means I discern no
change in performance.)  I have zero issues with heat.  For what it's worth, I
detect no drop in performance with either Windows 8.1 or Linuxmint 17, although
I do not boot either one very often.  Both of those systems performed without
any problems before I tweaked my BIOS (no heat, Windows used Nvidia driver,
Linuxmint used Nouveau driver,) but they both run fine with the tweaked BIOS,
so I leave my system "optimized" for OpenBSD.  Mind you now, I rely on a very
subjective method of using my patience level to measure performance; if I have
to wait on anything from a computer of any sort, I'm not going to tolerate it
for long.  I just don't have time.

A couple more things to mention.  No, I can't run Gnome.  No, the Broadcom wire-
less card is dead weight.  Ask me if I care.  Nope, sure don't.  Love cwm, and
I'm either connected to the net via ethernet or tethered to my smartphone.
Remember I'm from Alabama, so I don't have a problem doing more with less.
(Hmmm . . . maybe if I were not so slow, being from Alabama and everything, I
might have time to do more with less . . .)  I also understand the financial
restraints in obtaining hardware.  (I purchased my notebook as a refurbished
unit with tax and shipping for around $320 US about a year ago.)  And yes, I
run full HD, 1920x1080 without a hiccup.  After all, OpenBSD "Just Works!"
The xrandr output below is due to the Intel HD 3000 graphics, of course.

$ xrandr
Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 32767 x 32767
LVDS1 connected 1920x1080+0+0 (normal left inverted right x axis y
axis) 344mm x 194mm
   1920x1080     60.01*+  40.01
   1400x1050     59.98
   1280x1024     60.02
   1280x960      60.00
   1024x768      60.00
   800x600       60.32    56.25
   640x480       59.94
VGA1 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)

So, if this helps you, great.  I finally figured out that single processor
performance still rules in my world -- the other seven cores on that smokin'
Intel 2720QM can just "stay on the porch with the rest of the dawgs."

Sincerely,

Gilbert

OpenBSD 5.5-current (GENERIC) #218: Fri Jun 27 12:27:41 MDT 2014
    dera...@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC
RTC BIOS diagnostic error 3f<config_unit,memory_size,fixed_disk,invalid_time>
real mem = 8448847872 (8057MB)
avail mem = 8215207936 (7834MB)
mpath0 at root
scsibus0 at mpath0: 256 targets
mainbus0 at root
bios0 at mainbus0: SMBIOS rev. 2.6 @ 0xf2090 (106 entries)
bios0: vendor Dell Inc. version "A19" date 11/14/2013
bios0: Dell Inc. Latitude E6520
acpi0 at bios0: rev 2
acpi0: sleep states S0 S3 S4 S5
acpi0: tables DSDT FACP APIC TCPA SSDT MCFG HPET BOOT SSDT SSDT SSDT
DMAR SLIC SSDT
acpi0: wakeup devices UAR1(S3) HDEF(S4) GLAN(S4) PXSX(S4) RP01(S4)
PXSX(S4) RP02(S4) PXSX(S4) RP04(S4) PXSX(S4) RP05(S4) PXSX(S4)
RP06(S4) PXSX(S4) RP07(S4) PXSX(S4) [...]
acpitimer0 at acpi0: 3579545 Hz, 24 bits
acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
cpu0 at mainbus0: apid 0 (boot processor)
cpu0: Intel(R) Core(TM) i7-2720QM CPU @ 2.20GHz, 2195.32 MHz
cpu0: 
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,SMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,NXE,LONG,LAHF,PERF,ITSC
cpu0: 256KB 64b/line 8-way L2 cache
cpu0: smt 0, core 0, package 0
mtrr: Pentium Pro MTRR support, 10 var ranges, 88 fixed ranges
cpu0: apic clock running at 99MHz
ioapic0 at mainbus0: apid 2 pa 0xfec00000, version 20, 24 pins
acpimcfg0 at acpi0 addr 0xf8000000, bus 0-63
acpihpet0 at acpi0: 14318179 Hz
acpiprt0 at acpi0: bus 0 (PCI0)
acpiprt1 at acpi0: bus -1 (P0P1)
acpiprt2 at acpi0: bus 2 (RP01)
acpiprt3 at acpi0: bus 3 (RP02)
acpiprt4 at acpi0: bus 10 (RP04)
acpiprt5 at acpi0: bus -1 (RP05)
acpiprt6 at acpi0: bus 11 (RP06)
acpiprt7 at acpi0: bus -1 (RP07)
acpiprt8 at acpi0: bus -1 (RP08)
acpiprt9 at acpi0: bus 1 (PEG0)
acpiprt10 at acpi0: bus -1 (PEG1)
acpiprt11 at acpi0: bus -1 (PEG2)
acpiprt12 at acpi0: bus -1 (PEG3)
acpiprt13 at acpi0: bus 4 (RP03)
acpiec0 at acpi0
acpicpu0 at acpi0: C3, C2, C1, PSS
acpitz0 at acpi0: critical temperature is 107 degC
acpibtn0 at acpi0: LID_
acpibtn1 at acpi0: PBTN
acpibtn2 at acpi0: SBTN
acpiac0 at acpi0: AC unit online
acpibat0 at acpi0: BAT0 model "DELL 2VYF511" serial 1844 type LION oem "Sanyo"
acpibat1 at acpi0: BAT1 not present
acpibat2 at acpi0: BAT2 not present
acpivideo0 at acpi0: VID_
acpivout0 at acpivideo0: LCD_
acpivideo1 at acpi0: VID_
acpivout1 at acpivideo1: LCD_
cpu0: Enhanced SpeedStep 2195 MHz: speeds: 2201, 2200, 2100, 2000,
1900, 1800, 1700, 1600, 1500, 1400, 1300, 1200, 1100, 1000, 900, 800
MHz
pci0 at mainbus0 bus 0
pchb0 at pci0 dev 0 function 0 "Intel Core 2G Host" rev 0x09
ppb0 at pci0 dev 1 function 0 "Intel Core 2G PCIE" rev 0x09: msi
pci1 at ppb0 bus 1
vendor "NVIDIA", unknown product 0x1056 (class display subclass VGA,
rev 0xa1) at pci1 dev 0 function 0 not configured
azalia0 at pci1 dev 0 function 1 vendor "NVIDIA", unknown product
0x0e08 rev 0xa1: msi
azalia0: no supported codecs
vga1 at pci0 dev 2 function 0 "Intel HD Graphics 3000" rev 0x09
intagp at vga1 not configured
inteldrm0 at vga1
drm0 at inteldrm0
drm: Memory usable by graphics device = 2048M
inteldrm0: 1920x1080
wsdisplay0 at vga1 mux 1: console (std, vt100 emulation)
wsdisplay0: screen 1-5 added (std, vt100 emulation)
"Intel 6 Series MEI" rev 0x04 at pci0 dev 22 function 0 not configured
em0 at pci0 dev 25 function 0 "Intel 82579LM" rev 0x04: msi, address
5c:26:0a:46:d4:c8
ehci0 at pci0 dev 26 function 0 "Intel 6 Series USB" rev 0x04: apic 2 int 16
usb0 at ehci0: USB revision 2.0
uhub0 at usb0 "Intel EHCI root hub" rev 2.00/1.00 addr 1
azalia1 at pci0 dev 27 function 0 "Intel 6 Series HD Audio" rev 0x04: msi
azalia1: codecs: IDT/0x76e7
audio0 at azalia1
ppb1 at pci0 dev 28 function 0 "Intel 6 Series PCIE" rev 0xb4: msi
pci2 at ppb1 bus 2
ppb2 at pci0 dev 28 function 1 "Intel 6 Series PCIE" rev 0xb4: msi
pci3 at ppb2 bus 3
"Broadcom BCM4313" rev 0x01 at pci3 dev 0 function 0 not configured
ppb3 at pci0 dev 28 function 2 "Intel 6 Series PCIE" rev 0xb4: msi
pci4 at ppb3 bus 4
ppb4 at pci0 dev 28 function 3 "Intel 6 Series PCIE" rev 0xb4: msi
pci5 at ppb4 bus 10
ppb5 at pci0 dev 28 function 5 "Intel 6 Series PCIE" rev 0xb4: msi
pci6 at ppb5 bus 11
vendor "O2 Micro", unknown product 0x13f7 (class serial bus subclass
Firewire, rev 0x05) at pci6 dev 0 function 0 not configured
sdhc0 at pci6 dev 0 function 1 vendor "O2 Micro", unknown product
0x8321 rev 0x05: apic 2 int 18
sdmmc0 at sdhc0
vendor "O2 Micro", unknown product 0x8331 (class mass storage subclass
miscellaneous, rev 0x05) at pci6 dev 0 function 2 not configured
ehci1 at pci0 dev 29 function 0 "Intel 6 Series USB" rev 0x04: apic 2 int 17
usb1 at ehci1: USB revision 2.0
uhub1 at usb1 "Intel EHCI root hub" rev 2.00/1.00 addr 1
pcib0 at pci0 dev 31 function 0 "Intel QM67 LPC" rev 0x04
ahci0 at pci0 dev 31 function 2 "Intel 6 Series AHCI" rev 0x04: msi, AHCI 1.3
scsibus1 at ahci0: 32 targets
sd0 at scsibus1 targ 0 lun 0: <ATA, ST9320423AS, D005> SCSI3 0/direct
fixed naa.5000c50037d59892
sd0: 305245MB, 512 bytes/sector, 625142448 sectors
cd0 at scsibus1 targ 1 lun 0: <TSSTcorp, DVD+-RW TS-U633J, D300> ATAPI
5/cdrom removable
ichiic0 at pci0 dev 31 function 3 "Intel 6 Series SMBus" rev 0x04:
apic 2 int 18iic0 at ichiic0
lisa0 at iic0 addr 0x1d: lis331dl
spdmem0 at iic0 addr 0x50: 4GB DDR3 SDRAM PC3-10600 SO-DIMM
spdmem1 at iic0 addr 0x52: 4GB DDR3 SDRAM PC3-10600 SO-DIMM
isa0 at pcib0
isadma0 at isa0
pckbc0 at isa0 port 0x60/5pckbc0: using irq 1 for kbd slot
wskbd0 at pckbd0: console keyboard, using wsdisplay0
pms0 at pckbc0 (aux slot)
pckbc0: using irq 12 for aux slot
wsmouse0 at pms0 mux 0
pcppi0 at isa0 port 0x61
spkr0 at pcppi0
uhub2 at uhub0 port 1 "Intel Rate Matching Hub" rev 2.00/0.00 addr 2
uvideo0 at uhub2 port 5 configuration 1 interface 0
"M092S-E00-1304-SB387 Laptop_Integrated_Webcam_FHD" rev 2.00/c.01 addr
3
video0 at uvideo0
uhub3 at uhub1 port 1 "Intel Rate Matching Hub" rev 2.00/0.00 addr 2
urndis0 at uhub3 port 3 configuration 1 interface 0 "SAMSUNG
SAMSUNG_Android" rev 2.10/2.32 addr 3
urndis0: using RNDIS, address 02:01:54:07:35:62
umass0 at uhub3 port 4 configuration 1 interface 0 "Lexar USB Flash
Drive" rev 2.00/11.00 addr 4
umass0: using SCSI over Bulk-Only
scsibus2 at umass0: 2 targets, initiator 0
sd1 at scsibus2 targ 1 lun 0: <Lexar, USB Flash Drive, 1100> SCSI2
0/direct removable serial.05dca815HV4DI63NEBQN
sd1: 29952MB, 512 bytes/sector, 61341696 sectors
ugen0 at uhub3 port 8 "Broadcom Corp 5880" rev 1.10/1.01 addr 5
vscsi0 at root
scsibus3 at vscsi0: 256 targets
softraid0 at root
scsibus4 at softraid0: 256 targets
root on sd0a (62ee34edfa8f1297.a) swap on sd0b dump on sd0b
pckbd0 at pckbc0 (kbd slot)


On Sun, Jun 29, 2014 at 6:40 AM, Lampshade <lampsh...@poczta.fm> wrote:
> Hello,
> I am a student from Poland (country in Central Europe) and I would love to
> use OpenBSD everyday. I must have Windows operating system too. I must
> have it because of Autodesk's Inventor and Autocad software (in future
> probably also SolidWorks) and Ansys and so on. For that software I need
> something more powerful than Intel's GPU (not only for performance but
> also for quality). Today I have laptop with Optimus (Intel's GPU +
> Nvidia's GPU, if Nvidia's GPU renders something, Intel's GPU is proxy). It
> works well under Windows. Under Linux Intel's GPU works well, Nvidia's
> GPU is by default powered off. I can use it by manually typed commands.
> I can not do anything in BIOS to turn off Nvidia's GPU.
> OpenBSD can not turn off my Nvidia's GPU (despite the fact that it not
> renders or passes by anything) and just consumes a lot of energy from
> battery and heats my laptop.
> So I would consider buying a new laptop with AMD APU if it is supported
> well by OpenBSD and not heats laptop to high temperatures. Does anybody
> have experience with AMD APU's on OpenBSD and can let me know if it
> performs well?
> I know for a lot of you buying laptop is relatively more affordable. Please
> consider that in Poland we have the same (or even a bit higher) prices of
> electronics and considerably lower earnings, so I don't want to make a
> mistake and buy hardware based on my wrong opinion about support of
> AMD's GPUs with OpenBSD.
> I don't posted this topic in „General Hardware” because I am
> particularly
> interested in OpenBSD support, but if you consider it should land there
> please place this topic there.
>
> With best regards

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