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 https://www.insanelymac.com/forum/topic/332618-lenovo-g570-weired-hdmi-problem/ 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 https://www.insanelymac.com/forum/topic/332618-lenovo-g570-weired-hdmi-problem/#findComment-2591276 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 https://www.insanelymac.com/forum/topic/332618-lenovo-g570-weired-hdmi-problem/#findComment-2592751 Share on other sites More sharing options...
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