Guide To Install Yosemite on HP Laptops with Clover UEFI

[templaries]

Now works, boot from HDD, audio and brigthness, thank you very much for your time. The point was the resolution, my laptop 8460p has got low-resolution (1366x768), but in the specification acording my model number I saw the 1600 resolution. Very well, now its time to install a Windows 7 SO.

 

[nguyenmac]

Now works, boot from HDD, audio and brigthness, thank you very much for your time. The point was the resolution, my laptop 8460p has got low-resolution (1366x768), but in the specification acording my model number I saw the 1600 resolution. Very well, now its time to install a Windows 7 SO.

Strange, you selected the correct config.plist for USB, but wrong in PBI CE?

 

[templaries]

Strange, you selected the correct config.plist for USB, but wrong in PBI CE?

It seems. I select 1600 model to choice the config.plist but this works when I select low-resolution in the PBI. However you cant trust at 100% at this information.

 

[RehabMan]

It seems. I select 1600 model to choice the config.plist but this works when I select low-resolution in the PBI. However you cant trust at 100% at this information.

The resolution of your internal display can be determined in Windows (right click on desktop, choose 'Screen Resolution...'). It is a bad idea to guess about your hardware specifications.

 

[apatrida]

Hi,

First thanks for all the work and help for installing OS X, I have a Probook 4540s with I3 Sandy Bridge, I followed this guide to install Yosemite on it, and everything worked perfectly, I have been using the laptop for 2 monbths and no problems, but one day I tried to switch on the laptop and appears the apple logo about 5 second, later go the apple dark about 2 second and after that go black the screen and nothing more happens.

I tried in safe mode and verbose and appears lines some seconds and later the same, go the lines dark about 2 seconds and later nothing.

I didn't made nothing before this happens, no updates or install nothing the last time that worked.

Any idea to solve this?

Thanks a lot

 

[nguyenmac]

Hi,

First thanks for all the work and help for installing OS X, I have a Probook 4540s with I3 Sandy Bridge, I followed this guide to install Yosemite on it, and everything worked perfectly, I have been using the laptop for 2 monbths and no problems, but one day I tried to switch on the laptop and appears the apple logo about 5 second, later go the apple dark about 2 second and after that go black the screen and nothing more happens.

I tried in safe mode and verbose and appears lines some seconds and later the same, go the lines dark about 2 seconds and later nothing.

I didn't made nothing before this happens, no updates or install nothing the last time that worked.

Any idea to solve this?

Thanks a lot

Maybe pressing the brightness key up?

Or booting to recovery partition to repair disk.

 

[apatrida]

THANKS!!!!

I have been trying everything and was the brightness!!! Just press F3

Thanks a lot!!!

 

[nguyenmac]

@RehabMan: I want to prevent ACPIBacklight from using brightness level=0 at boot, can you modify the kext?

Or should I set the minimum level in DSDT patch > 0 to prevent this?

 

[RehabMan]

@RehabMan: I want to prevent ACPIBacklight from using brightness level=0 at boot, can you modify the kext?

Or should I set the minimum level in DSDT patch > 0 to prevent this?

I'd like to know what causes it to save a zero level. The kext already does not save a zero level to nvram (actually any value below 5 is ignored and not saved).

If someone wants to provide a reproducible set of steps that cause this problem, I'm waiting... Should a set of steps that reproduce the problem be discovered, bugs are to be reported here: https://github.com/RehabMan/OS-X-ACPI-Backlight/issues

You cannot correct it in DSDT, since a backlight level zero is valid (it is used for display sleep).

 

[Andrevvvvv]

Hello. After many unresulted tries, today I remake install-usb with latest version of files and try again. But still has same problem: after using latest PBI CE I can't boot from clover on SSD (even on safe mode), but clover on usb brings me right to OS X desktop without any additional keys.
Here an automatically genered troubleshooting files by latest PBI CE.
View attachment 122654

I will check it ASAP. What is your display resolution?

Build-in LCD 1366х768 px, but it's broken (might be damaged data bus) so I use 1920x1080 px monitor via HDMI for getting picture.
Also will try RC10 PBI CE, thanks

Tried. Now I can boot from SSD in safe mode. What wrong with SSD based clover? Can I do something to make it normal?