fatalfear Posted February 12, 2018 Share Posted February 12, 2018 i have very weird problem with my g570 Lenovo laptop in Sierra. nearly everything working except HDMI . actually my laptop see tv from hdmi port when it is closed but when I try to open tv hdmi and second display loosing and no signal .you can see what I mean attached pictures. I tried everything every patch etc but no success . can anybody help me about this situation . Thanks here my all attachments NOTE : my laptop has dual gpu Intel HD Graphics 3000 and AMD Radeon HD 6370M. AMD is disabled from bios ioreg.zip pictures.zip DSDT.aml.zip config.plist.zip Link to comment Share on other sites More sharing options...
Allan Posted February 13, 2018 Share Posted February 13, 2018 Rename GFX to IGPU and add this patch in your DSDT: Device (IGPU) { Name (_ADR, 0x00020000) Method (_DSM, 4, NotSerialized) { Store (Package (0x06) { "AAPL,snb-platform-id", Buffer (0x04) { 0x00, 0x00, 0x01, 0x00 }, "hda-gfx", Buffer (0x0A) { "onboard-2" }, "device-id", Buffer (0x04) { 0x12, 0x01, 0x00, 0x00 } }, Local0) DTGP (Arg0, Arg1, Arg2, Arg3, RefOf (Local0)) Return (Local0) } Link to comment Share on other sites More sharing options...
fatalfear Posted February 15, 2018 Author Share Posted February 15, 2018 Rename GFX to IGPU and add this patch in your DSDT: Device (IGPU) { Name (_ADR, 0x00020000) Method (_DSM, 4, NotSerialized) { Store (Package (0x06) { "AAPL,snb-platform-id", Buffer (0x04) { 0x00, 0x00, 0x01, 0x00 }, "hda-gfx", Buffer (0x0A) { "onboard-2" }, "device-id", Buffer (0x04) { 0x12, 0x01, 0x00, 0x00 } }, Local0) DTGP (Arg0, Arg1, Arg2, Arg3, RefOf (Local0)) Return (Local0) } thank you for your reply. I tried this before even again but my problem is tv behave strange . when I open tv extendeddisplay gone in display pref. but when i turned it of then I can see tv as a second display. it is totally up side down Link to comment Share on other sites More sharing options...
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