Moderators Jake Lo Posted November 6, 2016 Moderators Share Posted November 6, 2016 trackpad preference not loading is a known issue on Sierra. You just need to replace it with one from El Capitan. Then you could set the settings. Link to comment Share on other sites More sharing options...
marliwahoo Posted November 8, 2016 Author Share Posted November 8, 2016 Got trackpad prefs working with El Cap prefs. Seems to boot ok, but it seems the pressure sensitivity is set too heavy. I have to press to the point of clicking to get the curser to move. Link to comment Share on other sites More sharing options...
marliwahoo Posted February 15, 2017 Author Share Posted February 15, 2017 I did a bios update and lost ethernet and wifi (no other changes) Tried to revert back to older bios and dell bios update says it is "unsupported" and can not be done. (tried several methods) Any ideas? Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted February 15, 2017 Moderators Share Posted February 15, 2017 Enable Bios downgrade in the BIOS. Updating BIOS should not disable your ethernet or wifi. Try disabling Legacy Option ROM Link to comment Share on other sites More sharing options...
marliwahoo Posted February 19, 2017 Author Share Posted February 19, 2017 Did all of the above. Only changed the bios. Everything worked before bios update. Would you mind patching an updated origin dsdt? (attached) origin.zip Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted February 19, 2017 Moderators Share Posted February 19, 2017 what version of bios is this? 3470.zip Link to comment Share on other sites More sharing options...
marliwahoo Posted February 19, 2017 Author Share Posted February 19, 2017 As always a BIG thank you for your help! It's BIOS 1.5.2. I tried several methods of bios downgrade (including bios recovery mode) it would not accept any bios later than 1.5.2. Searching the web for answers I found: 1. enable Bios downgrade (I did that) 2. Turn off TPM (done) 3. BIOS recovery (won't accept any .RCV file with bios earlier than 1.5.2) Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted February 19, 2017 Moderators Share Posted February 19, 2017 Did new DSDT/SSDT fix your issue? Link to comment Share on other sites More sharing options...
marliwahoo Posted February 19, 2017 Author Share Posted February 19, 2017 Yes! All fixed. Thank you!! No other changes needed to be made. All networking is working. One note: I used hdaenabler.kext because I couldn't compile your last dsdt after I tried to change layout id. Otherwise ...... Perfect! Here are the notes from the 1.5.2 BIOS update: Link to comment Share on other sites More sharing options...
marliwahoo Posted April 3, 2017 Author Share Posted April 3, 2017 After the fixes from the last bios update , I was still having problems with playing video - both from the internet and from my HD after sleep. I noticed there was a newer bios (1.6.2) and tried it. But now networking is broken again. Is there a simple guide specifically for patching dsdt/ssdt on latitudes? I find most of the guides complicated. I hate to ask, but could you patch these? Thanks! origin.zip Link to comment Share on other sites More sharing options...
Recommended Posts