手贱,升级到10.10.3以后,黑屏、花屏,怎么样好玩,苹果就怎样玩,折腾了好几天,无果,终于在国外网站找到解决办法:
http://www.tonymacx86.com/yosemite-desktop-support/161361-10-10-3-update-black-screen-cursor-2.html
见16楼,虽然是针对r270的,我试验了一下,r250完美解决。
原帖如下:
The new values in 10.10.3 for "cail_properties" of AMDVerdeGraphicsAccelerator driver are:
< dict>
<key>CAIL_DisableDrmdmaPowerGating</key>
<integer>0</integer>
<key>CAIL_DisableDynamicGfxMGPowerGating</key>
<integer>1</integer>
<key>CAIL_DisableGfxCGPowerGating</key>
<integer>0</integer>
<key>CAIL_DisableGmcPowerGating</key>
<integer>1</integer>
<key>CAIL_DisableStaticGfxMGPowerGating</key>
<integer>1</integer>
<key>CAIL_DisableUVDPowerGating</key>
<integer>0</integer>
<key>CAIL_DisableVCEPowerGating</key>
<integer>0</integer>
< /dict>
The old values (in 10.10.2) was:
< dict>
<key>CAIL_DisableDrmdmaPowerGating</key>
<integer>1</integer>
<key>CAIL_DisableDynamicGfxMGPowerGating</key>
<integer>1</integer>
<key>CAIL_DisableGfxCGPowerGating</key>
<integer>1</integer>
<key>CAIL_DisableGmcPowerGating</key>
<integer>1</integer>
<key>CAIL_DisableStaticGfxMGPowerGating</key>
<integer>1</integer>
<key>CAIL_DisableUVDPowerGating</key>
<integer>0</integer>
<key>CAIL_DisableVCEPowerGating</key>
<integer>1</integer>
< /dict>
Once I change it back in Info.plist and clear kext cache, my system boots without problems.