[HELP] Garbled screen sometimes

[Gimmemoare]

High Sierra on Lenovo E220s works fine but sometimes garbled spots and horizontal color lines appear on desktop and app windows (scroll and move with window; see attached images).
How to fix it?

 

[RehabMan]

High Sierra on Lenovo E220s works fine but sometimes garbled spots and horizontal color lines appear on desktop and app windows (scroll and move with window; see attached images).
How to fix it?

View attachment 293147View attachment 293148View attachment 293149

Try with OsxAptioFixDrv-64.efi instead of OsxAptioFixDrv-64.efi.
Check BIOS settings (64mb DVMT-prealloc).
Make sure patched ACPI is from a recent extract (re-extract/re-patch).

 

[Gimmemoare]

Swapping OsxAptioFix(2)Drv.efi has no effect. BIOS is quite simple and has no graphics tweaking.
OK, let's patch DSDT/SSDT. Thank you.

 

[RehabMan]

Swapping OsxAptioFix(2)Drv.efi has no effect. BIOS is quite simple and has no graphics tweaking.
OK, let's patch DSDT/SSDT. Thank you.

Don't forget to do EC reset after you finish patching ACPI correctly.

 

[Gimmemoare]

Don't forget to do EC reset after you finish patching ACPI correctly.

Which way of DSDT patching is better: by MacIasl or by Clover?

 

[RehabMan]

Which way of DSDT patching is better: by MacIasl or by Clover?

Clover ACPI Hotpatch is more difficult to implement, but easier for others to deploy and not as sensitive to BIOS changes, hardware changes, etc.

 

[Gimmemoare]

Try with OsxAptioFixDrv-64.efi instead of OsxAptioFixDrv-64.efi.
Check BIOS settings (64mb DVMT-prealloc).
Make sure patched ACPI is from a recent extract (re-extract/re-patch).

Re-extracted/re-patched ACPI does not kill this bug.

 

[RehabMan]

Re-extracted/re-patched ACPI does not kill this bug.

No "Problem Reporting" files attached.
Read FAQ, "Problem Reporting" again. Carefully. Attach all requested files/output.
https://www.tonymacx86.com/threads/faq-read-first-laptop-frequent-questions.164990/