someitalian123 Posted April 10, 2017 Share Posted April 10, 2017 For what ever reason the brightness control in the System Preferences no longer works. I think it may be related to these two previous issues that I posted about in the past https://osxlatitude.com/index.php?/topic/9131-solved-e6420-monitor-sleep-turn-off-on-boot-fresh-install-of-el-capitan/ https://osxlatitude.com/index.php?/topic/9504-solved-black-screen-on-e6420-sierra-upgrade/ I am using the following DSDT because the one in Jake Lo's Sierra bootpack was not working despite me having updated to the same bios version that the bootpack is meant for, as discussed in the above threads. https://osxlatitude.com/index.php?/topic/9131-solved-e6420-monitor-sleep-turn-off-on-boot-fresh-install-of-el-capitan/?p=61321 But that DSDT was patched back when I was on El Capitan, do I need a new freshly patched DSDT for Sierra? Also why does the LoRes DSDT in the Sierra bootpack not work for me? This has been an issue for me since El Captain, is there something different about my E6420's monitor? It uses the Intel HD 3000 with the max resolution of 1366x768. Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted April 10, 2017 Moderators Share Posted April 10, 2017 Brightness issue is knows for 10.12.4. I believe Hervé said it works if you remove IntelBacklight.kext. Link to comment Share on other sites More sharing options...
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