vrishcons Posted July 11, 2016 Share Posted July 11, 2016 Hi Seniors, I am facing intermittent screen freeze problems while minimizing any browser. I could only solve using switchresx by increasing sync values. But while using switchresx the screen looks dull. The same problem follows in 10.12 DP. Unable to solve till now. Yosemite is working smooth. My Laptop Specs: DELL XPS 15 L502X, i5 2450m,2GB Nvidia graphics, 8GB Ram, 1 TB HDD. Thanks in advance. Link to comment Share on other sites More sharing options...
Administrators Hervé Posted July 11, 2016 Administrators Share Posted July 11, 2016 Probably an Optimus-related issue. Did you tune your laptop for HD3000 graphics? Do you get graphics acceleration at all? Link to comment Share on other sites More sharing options...
vrishcons Posted July 13, 2016 Author Share Posted July 13, 2016 I am sorry for replying late. Please explain how to tune HD 3000 graphics. It worked Out-of-box in 10.10.5. no issues at all. I am finding this problem from 10.11 onwards. I am using DSDT & SSDT to disable Nvidia graphics. Thanks in advance Link to comment Share on other sites More sharing options...
Administrators Hervé Posted July 13, 2016 Administrators Share Posted July 13, 2016 Did you patch your DSDT for HD3000 layout and screen res at all? What LCD screen resolution do you have? Anything beyond 1440x900 usually requires to set DualLink to true. Link to comment Share on other sites More sharing options...
vrishcons Posted July 13, 2016 Author Share Posted July 13, 2016 Yes I did patch HD3000 using Rehabman DSDT patches. My screen resolution is 1366x768. I have one small doubt. DSDT change with different macOS?. Because DSDT which I use with 10.10 have no problems. Same DSDT i am using now for El Capitan. The problem solves if I use Switchresx and change VSync. Link to comment Share on other sites More sharing options...
Administrators Hervé Posted July 13, 2016 Administrators Share Posted July 13, 2016 No, the DSDT normally remains untouched throughout for graphics. It can need updating on occasions; for instance the USB device for El Capitan. Link to comment Share on other sites More sharing options...
Administrators Hervé Posted July 13, 2016 Administrators Share Posted July 13, 2016 Which boot loader are you using, Clover or Chameleon/Enoch? Link to comment Share on other sites More sharing options...
vrishcons Posted July 13, 2016 Author Share Posted July 13, 2016 Clover bootloader. Link to comment Share on other sites More sharing options...
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