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Good evening,

I am sorry, but my English is not the best.


I've had installed SL, lion and now I have the mount lion 10.8.2.


It turns out that in all versions have a problem with my graphics.


From time to time the following happens.

When you start the mac screen turns black and the monitor light turns orange.

I click the reset button and then opens fine.

Have you put in chamaleon with-v-x and the same thing happens verbose mode disappears and instead of the login screen appears the screen goes black and the monitor light turns orange.

I reset and then opens fine.



tried GraphicsEnabler = yes and then = and the problem continues.


The Graphic is an Ati Radeon HD5770 GigaByte Distributor: ATI (0x1002) Device ID: 0x68b8


The Monitor is: HP L1908w vga converter connected to dvi


Motherboad: ASUS P5P43TD PRO Chipset: Processor: C2Q Q9400 -

Memory: 4GB DDR3 1666Mhz 7-8-7-24 gskill

HD: SAMSUNG SATA II 500GB f3 / Network: Realtek

Audio: ACL887

Video: ATI 5770 1GB DDR5 / Keyboard and Mouse: Generic USB



Who can give help thank.

Edited by fantomas1
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If it happens a lot, specifying framebuffer may do the trick, varies a bit between different manufacturers versions of 5770 and their different sets of outputs. To test a framebuffer, while using GraphicsEnabler=Yes, at Chameleon boot prompt type:


followed by the name of the framebuffer. Also important syntax is exact. Try these ones first, one at a time: Eulemur, Hoolock, Vervet, Uakari

It would look like this when typed in Chameleon






Even still, maybe once in every 30+ reboots, I'll see that same exact issue, but using screen sharing from my MacBook, if I change the resolution in SystemSetings>Displays to lowest setting and then back to default, display will kick back on. Have seen same thing also on a couple real MacMini's where it was probably DHCP handshake issue, my main monitor is DVI so shouldn't be a DHCP problem, but is very rare occurrence none the less.

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Good afternoon,

I think I have another problem and that might be cause the problem I mentioned in the previous post.


If I use GraphicsEnabler = yes my grafica is recognized as HD5770.

Now if use GraphicsEnabler or GraphicsEnabler=no then put in my grafica is recognized as Ati HD5000.


According read by google should not use Graphics Enabler = yes.


After searching on google I do edit framebuffer and when I read the rom appears something strange. Do not know Personality



TOM BIOS Rom: SubsystemVendorID: SubsystemID 0x1002: 0x2543

IOBaseAddress: 0x0000

Filename: S3C01001.100

BIOS Bootup Message:




PCI ID: 1002:68 b8

Connector at index 0

Type [@ offset 44462]: DisplayPort (10)

Encoder [@ offset 44466]: INTERNAL_UNIPHY2 (0x21)

i2cid [@ offset 44590]: 0x91, OSX senseid: 0x2

Connector at index 1

Type [@ offset 44472]: HDMI-A (11)

Encoder [@ offset 44476]: INTERNAL_UNIPHY2 (0x21)

i2cid [@ offset 44617]: 0x90, OSX senseid: 0x1

Connector at index 2

Type [@ offset 44482]: DVI-I (2)

Encoder [@ offset 44486]: INTERNAL_UNIPHY1 (0x20)

i2cid [@ offset 44654]: 0x93, OSX senseid: 0x4

Connector at index 3

Type [@ offset 44492]: DVI-I (2)

Encoder [@ offset 44496]: INTERNAL_KLDSCP_DAC2 (0x16)

i2cid [@ offset 44654]: 0x93, OSX senseid: 0x4

Connector at index 4

Type [@ offset 44502]: DVI-I (2)

Encoder [@ offset 44506]: INTERNAL_UNIPHY (0x1e)

i2cid [@ offset 44691]: 0x92, OSX senseid: 0x3

Connector at index 5

Type [@ offset 44512]: DVI-I (2)

Encoder [@ offset 44516]: INTERNAL_KLDSCP_DAC1 (0x15)

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I used the settings you said and put the rom in the extra folder and it did not work.

I still try out using the rom that I took of my Graphic but also did not.


GE = yes in the dvd player and power point microsoft office works well.


If GE = no, and the changes you mentioned the dvd player does not work and gives power point error when I put in full screen.

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  • 2 months later...

try to change the vgabios whit AtiFlash or AtiFlashWin, you can find some vgabios of your manufacture (gygabite) in "techpowerup" website , dont remember to back up the bios first to flash it.. i had the same problems whit my HD 5770 but not sapphire, have XFX, i solved changing the vgabios , also set macpro 5,1 and in org.chameleon only set "graphicenabler=yes"

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