So I installed the 10.5.8 upgrade on my MacBook4,1 early -08. First impressions was that the screen got really bright. After a coupple of minutes the screen went black. So i called up Apple tech and asked what to do. After a coupple of NVRAM and PRAM (alt + cmd + R + P w. battery removed before) no success. I had to go to work and left it hanging.
When I got back I gave it a shot my self. After hocking up the computer to my TV I could see what I was doing without using a flashlight as a light source on the screen. Managed to reinstall Leopard clean, that didn't help.
Called up Apple tech again and asked for help, but no success there.
Installed Ubuntu 9.04 and the problem resided. So i removed all partitions, incl. the EFI and reinstalled Leopard. Same problem. In anger i tried to alter the screen brightness controls as the screen flashed before my eyes when i used them. I figured out that i could set the brightness to lvl 4 (out of 15) and the light wouldn't go out, at lvl 5 the light would be on for a while and then die. The higher the levels the faster the screen goes black.
Anyone experienced this with the 10.5.8 update?! Do you have any solution to this problem?
Best regards
Anton Johansson
Update: Booted from the install disk while pressing D for diagnostics. Ran the extended test four times without any problems found. Problem remains.
Update: I reinstalled Leopard (10.5.2 that came with the MB) and repaired the permissions after the clean install. Installed Combo Update 10.5.8 and fixed the permissions, same problem still occurs. Clean installed Leopard 10.5.2 again, repaired the permissions. Combo Update 10.5.7, repair permissions, Combo Update 10.5.8 repair permissions. didn't help. Started up in Safe Mode and repaired permissions. The screen goes black after a while in 10.5.2 also. Problem is still unresolved.
When I got back I gave it a shot my self. After hocking up the computer to my TV I could see what I was doing without using a flashlight as a light source on the screen. Managed to reinstall Leopard clean, that didn't help.
Called up Apple tech again and asked for help, but no success there.
Installed Ubuntu 9.04 and the problem resided. So i removed all partitions, incl. the EFI and reinstalled Leopard. Same problem. In anger i tried to alter the screen brightness controls as the screen flashed before my eyes when i used them. I figured out that i could set the brightness to lvl 4 (out of 15) and the light wouldn't go out, at lvl 5 the light would be on for a while and then die. The higher the levels the faster the screen goes black.
Anyone experienced this with the 10.5.8 update?! Do you have any solution to this problem?
Best regards
Anton Johansson
Update: Booted from the install disk while pressing D for diagnostics. Ran the extended test four times without any problems found. Problem remains.
Update: I reinstalled Leopard (10.5.2 that came with the MB) and repaired the permissions after the clean install. Installed Combo Update 10.5.8 and fixed the permissions, same problem still occurs. Clean installed Leopard 10.5.2 again, repaired the permissions. Combo Update 10.5.7, repair permissions, Combo Update 10.5.8 repair permissions. didn't help. Started up in Safe Mode and repaired permissions. The screen goes black after a while in 10.5.2 also. Problem is still unresolved.
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