AMD R9 270 doesn't work properly after 10.10.3 update

[Unhyper]

Thank you very much for those files, I very much appreciate it.

I edited the old values into the new AMDRadeonX4000.kext as suggested in that other thread, installed both with KextBeast, repaired permissions and rebuilt kextcache. Then I rebooted... But it still does not work.

I also tried booting with the GraphicsEnabler=No IGPEnabler=No -f flags, but it didn't make a difference. I am obviously missing a step here.

What else can I do or try? Is there any log file or diagnostic the results of which I could paste here that would help?

 

[Jithin.C.V]

Thank you very much for those files, I very much appreciate it.

I edited the old values into the new AMDRadeonX4000.kext as suggested in that other thread, installed both with KextBeast, repaired permissions and rebuilt kextcache. Then I rebooted... But it still does not work.

I also tried booting with the GraphicsEnabler=No IGPEnabler=No -f flags, but it didn't make a difference. I am obviously missing a step here.

What else can I do or try? Is there any log file or diagnostic the results of which I could paste here that would help?

Is the booting going to a black screen?? Or you are able to boot but no QE/CI??

 

[Unhyper]

Is the booting going to a black screen?? Or you are able to boot but no QE/CI??

I can boot just fine, no problem, just no QE/CI and low resolution. The graphics card isn't recognized, just reported as 3MB.

 

[Jithin.C.V]

I can boot just fine, no problem, just no QE/CI and low resolution. The graphics card isn't recognized, just reported as 3MB.

What is the device id of your graphics card??

 

[Unhyper]

It is 0x6811, sir.

Display:


Type: GPU
Bus: PCIe
PCIe Lane Width: x16
VRAM (Total): 3 MB
Vendor: ATI (0x1002)
Device ID: 0x6811
Revision ID: 0x0000
Kernel Extension Info: No Kext Loaded
Displays:
Display:
Resolution: 1024 x 768
Pixel Depth: 32-Bit Color (ARGB8888)
Main Display: Yes
Mirror: Off
Online: Yes

 

[Jithin.C.V]

It is 0x6811, sir.

I am simple member as like you brother..

Display:


Type: GPU
Bus: PCIe
PCIe Lane Width: x16
VRAM (Total): 3 MB
Vendor: ATI (0x1002)
Device ID: 0x6811
Revision ID: 0x0000
Kernel Extension Info: No Kext Loaded
Displays:
Display:
Resolution: 1024 x 768
Pixel Depth: 32-Bit Color (ARGB8888)
Main Display: Yes
Mirror: Off
Online: Yes

Is the card worked natively before updating to 10.10.3?? or you had added the device id to the kext to make it enabled??

Try to boot with flag "GraphicsEnabler=No AtiConfig=Futomaki -f"

 

[Jithin.C.V]

Checked the device ID on the kexts, but not present so manually added it.

Download and install attached kexts with Kext Wizard.

Once it is installed, execute repair disk permissions and rebuild caches using the Kext Wizard (Check in Maintenance tab for these options)

Reboot and check whether card enabled or not.

 

[Unhyper]

Checked the device ID on the kexts, but not present so manually added it.

Download and install attached kexts with Kext Wizard.

Once it is installed, execute repair disk permissions and rebuild caches using the Kext Wizard (Check in Maintenance tab for these options)

Reboot and check whether card enabled or not.

Those files worked! I did as you said and it works perfectly! Thank you so much for all your trouble.

AMD Radeon HD 7xxx:


Chipset Model: AMD Radeon HD 7xxx
Type: GPU
Bus: PCIe
PCIe Lane Width: x16
VRAM (Total): 2048 MB
Vendor: ATI (0x1002)
Device ID: 0x6811
Revision ID: 0x0000
Displays:
ASUS PA238:
Resolution: 1920 x 1080 @ 60Hz (1080p)
Pixel Depth: 32-Bit Color (ARGB8888)
Display Serial Number: CBLMTF000615
Main Display: Yes
Mirror: Off
Online: Yes
Rotation: Supported
Connection Type: DisplayPort
Television: Yes

 

[Jithin.C.V]

Those files worked! I did as you said and it works perfectly! Thank you so much for all your trouble.

AMD Radeon HD 7xxx:


Chipset Model: AMD Radeon HD 7xxx
Type: GPU
Bus: PCIe
PCIe Lane Width: x16
VRAM (Total): 2048 MB
Vendor: ATI (0x1002)
Device ID: 0x6811
Revision ID: 0x0000
Displays:
ASUS PA238:
Resolution: 1920 x 1080 @ 60Hz (1080p)
Pixel Depth: 32-Bit Color (ARGB8888)
Display Serial Number: CBLMTF000615
Main Display: Yes
Mirror: Off
Online: Yes
Rotation: Supported
Connection Type: DisplayPort
Television: Yes

WooW.. Nice to hear. Enjoy your Yosemite..

 

[cmengoh]

I must thanks you Jithin.C.Vfor the two files, now my R9 270 is working, Dual display is working also, ( it was not working in 10.10.2)

AMD Radeon HD 7xxx:


Chipset Model: AMD Radeon HD 7xxx
Type: GPU
Bus: PCIe
PCIe Lane Width: x16
VRAM (Total): 2048 MB
Vendor: ATI (0x1002)
Device ID: 0x6811
Revision ID: 0x0000
Displays:
DELL U2311H:
Resolution: 1920 x 1080 @ 60 Hz
Pixel Depth: 32-Bit Color (ARGB8888)
Display Serial Number: V4GHJ07323TL
Main Display: Yes
Mirror: Off
Online: Yes
Rotation: Supported
DELL U2312HM:
Resolution: 1920 x 1080 @ 60 Hz
Pixel Depth: 32-Bit Color (ARGB8888)
Display Serial Number: WMYJW36EAKJB
Mirror: Off
Online: Yes
Rotation: Supported

thank you very much