28 Feb 2023 |
iVRy#7395 | Ouch, there is only that one it seems. Contacted Bizlink to see if I can get a sample. Also available from China. | 01:22:20 |
iVRy#7395 | Varjo is 300USD shipping to South Africa! 😦 | 01:22:52 |
Twidge | Oh damn, it was free to us lol | 01:23:12 |
iVRy#7395 | Bummed, have 2080Ti but has faulty RAM. | 01:28:30 |
Evening Newbs | Bleh, $150 for that adapter. Wasn't the one Valve cancelled like $20? | 01:29:38 |
iVRy#7395 | More like $350 | 01:30:01 |
iVRy#7395 | https://www.xtal.pro/product/virtuallink-adapter | 01:30:30 |
Evening Newbs |  Download Screenshot_20230227-203017.png | 01:31:06 |
Evening Newbs | From Varjo. | 01:31:06 |
iVRy#7395 | Here is one from China:
https://www.mdgloble.com/goods_177550.htm | 01:31:38 |
Evening Newbs | They also offer a power adapter for laptops. I suspect mine isn't seeing the device because it can't deliver enough power to the port. https://international-store.varjo.com/accessories?show=laptop-adapter | 01:32:16 |
Evening Newbs | I wonder if they offer free returns. I'm not to interested in spending $100 on a hunch. | 01:32:56 |
Evening Newbs | * I wonder if they offer free returns. I'm not too interested in spending $100 on a hunch. | 01:33:02 |
Twidge | i figure i have uses for it regardless, i don't have any dp-alt mode on my desktops | 03:28:20 |
Twidge | am i correct in assuming whether or not this is a lark, the next steps are poking and prodding to get it to swap to 'VR mode'? | 03:30:18 |
Twidge | and/or getting data off the emmc we can tear apart? | 03:31:01 |
thaytan#5292 | Yes, it connects in "cinematic mode". The 1080p output is presented as a virtual floating cinema screen that isn't rigidly locked to your head, but floats back to the front after a second or two if you look elsewhere.
DisplayPort-2 connected 1920x1080+1920+0 (normal left inverted right x axis y axis) 800mm x 450mm
1920x1080 60.00*+ 120.00 119.88 50.00 59.94 59.93 24.00 23.98
1680x1050 60.00
1280x1024 60.00
1440x900 60.00
1280x800 60.00
1280x720 60.00
1024x768 60.00
800x600 60.00
640x480 60.00 59.94 | 05:06:46 |
thaytan#5292 | The AMD driver reports that it's running with 2 lanes:
cat /sys/kernel/debug/dri/1/DP-3/link_settings
Current: 2 0xa 0 Verified: 2 0x1e 16 Reported: 2 0x1e 16 Preferred: 0 0x0 0
Attempting to switch it to 4 lanes failed | 05:06:53 |
thaytan#5292 | I don't know how to get info out of the amd gpu driver about which USB-C pins have been configured which way | 05:11:18 |
thaytan#5292 | it's the USB-C port on a 6900XT GPU | 05:11:37 |
Twidge | straight answers seem to be a mess but it seems like the 6900XT's port is not virtuallink, just USB-C with DP-alt | 05:22:19 |
Twidge | then again who knows if the PS5 is either 😅 | 05:23:11 |
Twidge | i hope this adapter isn't useless lol | 05:24:01 |
thaytan#5292 | "being virtuallink" means a USB-C port that's provisioned to be able to mux USB3 onto the pins that are normally USB-2.0 only | 05:24:02 |
Twidge | right | 05:24:03 |
Evening Newbs | Wait, are you saying that head tracking works in cinematic mode? | 05:24:03 |
thaytan#5292 | but beyond that, there's the negotiation to actually configure the connection in virtuallink mode | 05:24:04 |
Twidge | right, that might be more than just asking for more lanes | 05:24:14 |
thaytan#5292 | which would imply the headset supplying an SID that the AMDGPU driver recognises as virtuallink... and the only one of those that exists is the USB_TYPEC_NVIDIA_VLINK_SID 0x955 define in Linux. The AMDGPU driver doesn't use that define anywhere. The generic typec driver does, but I don't know if that's in use. It also seems weird that Sony would use the Nvidia define instead of just inventing their own | 05:25:34 |
thaytan#5292 | In short, this is not configured as virtuallink when plugged into my 6900XT, it's only doing 2-lane DP. On the PS5, they may configure it as virtuallink, but they could force it into that mode without needing anything standard Linux would recognise | 05:26:32 |