ASUS s400c with HD Graphics 4000 (Gen 7) with a black screen

[modeenf]

More or less same as #17456 but this are laptop and not a NUC

I's a ASUS s400c with HD Graphics 4000 (Gen 7), Ivy Bridge (Mobile GT2) with Id : 0166

[korli]

if you have Ubuntu or similar, you could install intel-gpu-tools and dump the regs with:

sudo intel_reg --dump > ivybridge_0166_ubuntu_dump.txt

[modeenf]

I hope Linux mint works (could't get Ubuntu to install intel-gpu-tools) and dump without the --

[korli]

Looks interesting for rudolfc (this uses lvds).

[modeenf]

If any registry dump are needed for any of these graphiccards let me know..

Modell	Group	Id	Main output	Extern port/dual
UHD Graphics 620(Gen 9.5)	Kaby Lake	-	Laptop	HDMI & USB-C
UHD Graphics 620(Gen 9.5)	Kaby Lake	-	Laptop	USB-C
UHD Graphics 530 (Gen 9)	Skylake	1912	DataPort	VGA & DP
UHD Graphics 520 (Gen 9)	Skylake	-	Laptop	DataPort
UHD Graphics 4000 (Gen 7)	Ivy Bridge	0166	HDMI	-
UHD Graphics 4000 (Gen 7)	Ivy Bridge	0166	Laptop	VGA & HDMI
UHD Graphics 4000 (Gen 5)	IronLake	0046	Laptop	VGA (on doc, DP)
GMA 3150 (Atom N4xx)	GMA	a011	Laptop	VGA

Modell	Group	Id	Main output	Extern port/dual
GeForce GT 320	NVidia GT21x	-	HDMI	VGA & DVI
Radeon HD 6450	AMD Caicos	-	HDMI	VGA & DVI
Radeon HD 5450	AMD Cedar PRO	-	HDMI	VGA & DVI
GeForce 9300	NVidia G86 or G98	-	HDMI	VGA

[rudolfc]

Actually I think this looks like this laptop runs with eDP, FDI is down, data/link MN is programmed, and first crtc,scaler from the looks of it. The dump is very interesting..

Why do you think it uses lvds @korli? I might be missing something of course?

[rudolfc]

Hi, Looking again at the syslog I see I was mistaken: LVDS panel indeed! Sorry for the noise..

No update for this yet I'm afraid..

[rudolfc]

Hello, could you please try hrev55845 (or later)? Please test it and upload the syslog once more with your comments :-)

The drive; will at least dump a bit more info about the FDI link which I will need, since it's not programmed correctly from the looks of the existing log above.

Thanks in advance!

[korli]

modeenf, any chance to test on a recent nightly?

[modeenf]

Only 1366*768 32 bits 60 hz.. Tested both bigger and smaller and also change to 70 and 85hz

[korli]

Yes, the code doesn't handle scaling on Generation 7: ​https://cgit.haiku-os.org/haiku/tree/src/add-ons/accelerants/intel_extreme/Ports.cpp#n1174