[joevt]

Since the U4919DW supports DisplayPort, I would use a DisplayPort 1.4 MST hub that has two DisplayPort outputs.

5120×1440@60Hz is less bandwidth than 4K60 and a DisplayPort 1.4 MST hub can do up to three 4K60 displays using DSC and the iGPU supports DSC.

Why can’t people write proper specs?

The specs for the CSV-7200H do not explain the maximum bandwidth since it does not state if the 4K60 mode is 8bpc RGB or 444 (requires HDMI 2.0 bandwidth) or 4K60 8bpc 4:2:0 (requires HDMI 1.4 bandwidth). It’s probably HDMI 2.0

It also doesn’t explain the max DisplayPort bandwidth since it does not show the number of DisplayPort lanes. The link rate numbers it does show are for single lane. It’s probably 4 lanes.

The specs for the CSV-7220 or even more ambiguous.

[joevt]

I don’t have that display or any USB-C display.

The only way I could make it work with a DisplayPort display was to connect a Thunderbolt 4 hub between the CAC-1336 and a USB-C to DisplayPort adapter. Then a normal DisplayPort cable connects that to a DisplayPort display.
https://insights.club-3d.com/thread/cac-1336-operation/

[joevt]

What display do you want to connect to the HDMI port of the Nintendo Switch?

The CAC-1336 might work with USB-C displays or Thunderbolt displays that support USB-C input. I have not tested the CAC-1336 in that situation.

[joevt]

The current crop of HDMI 2.1 adapters only support 4K120 or maybe 8K30 or 8K60 4:2:0 and don’t support VRR. If an adapter supports 8K60 then it should report support for 4K240.

The PS196 is a newer DisplayPort to HDMI 2.1 protocol converter chip from Parade. I think it supports VRR and 8K60. I don’t know if you can buy an adapter that uses that chip yet.
https://www.paradetech.com/products/ps196/
The PS196 specs say it supports DisplayPort 2.0 but it appears to be limited to HBR3 link rate which is the max for DisplayPort 1.4 so I don’t know what features DisplayPort 2.0 adds for adapters made with this chip.

[joevt]

Shipping can’t cause this kind of problem. No amount of wrapping is going to fix this. It’s most likely a design flaw. Try an adapter that doesn’t use the same chip, such as Apple Mini-DisplayPort to Dual Link DVI adapter. Or try an adapter of a similar design from a different manufacturer. One person said the Cable Creations adapter works, but other reviews says it has the same problem. Here’s a thread with more testing of adapters:  #86 

[joevt]

Looks like the flickering problem https://insights.club-3d.com/thread/flickering-problem-with-cac-1510-a-and-apple-cinema-display-30-on-mac-mini-m1/

 

[joevt]

Looks like the flickering problem https://insights.club-3d.com/thread/flickering-problem-with-cac-1510-a-and-apple-cinema-display-30-on-mac-mini-m1/

except the flickering problem is more noticeable with a black background.

As for your iPad Pro picture, there’s too much detail to see the flickering problem.

[joevt]

Are you connecting directly to the Thunderbolt 3 port of the MacBook Pro? The CAC-1510 cannot do 2560×1600 from a USB-C dock unless the dock has a built-in MST Hub.

The Apple 30″ Cinema HD Display supports only two modes with specific timings:
1280×[email protected] 49.306kHz 71.00MHz h(48 32 80 +) v(3 6 14 -)
2560×[email protected] 98.529kHz 268.00MHz h(48 32 80 +) v(3 6 37 -)
(front porch, sync width, back porch)

Check the timings with SwitchResX.

Any modes that are not 1280×800 or 2560×1600 will need to be a scaled mode.

[joevt]

The USB-A connector of the Apple 30″ Cinema HD Display is the the USB ports of the display and also for brightness control.

I think brightness control doesn’t work from Apple Silicon Macs, so you may need to use an app like MonitorControl.app to control brightness from keyboard. You may need to modify a setting to get full brightness: #95 

 

[joevt]

Right, DP 2.1 can be 40, 54, 80 Gbps (38.685, 52.22475, 77.37 Gbps for data).

But HDMI 2.1 is also not specific. It could be 24, 32, 40, 48 Gbps (21.33, 28.44, 35.55, 42.66 Gbps for data)

Any Thunderbolt 4 or USB4 cable should be able to do DP 2.1 at 80 Gbps since it’s just 4 lanes at 20 Gbps each. Are there any USB-C ports that can do DP 2.1? I think current GPUs that support DP 2.1 don’t do the max 80 Gbps yet anyway.

DP 1.4 max is 32.4 Gbps (25.92 Gbps). It does ≈60% the bandwidth of HDMI 2.1 so it’s not bad. Plus, DSC can more than triple the pixel clock by reducing bpp from 30 to 12 bpp, so HBR3 can do 2160 MHz which is good enough for 8K60 CVT-RB but not good enough for 8K60 HDMI. DSC can maybe go as low as 8bpp though (but I haven’t seen it or tried it), which would allow a pixel clock of 3240 MHz.

I’m not sure why the CAC-1085 is limited to 4K120 (8K30) instead of 4K240 (8K60) since DisplayPort 1.4 can do that with DSC using CVT-RB timings. I’ve never tried the CAC-1085 with a display that can do that pixel clock. I don’t think there are any displays that can do 4K240? I have a Dr HDMI 8K which might be able to fake such a display but I’m not sure if it does 48 Gbps (FRL-6).

Below is the DisplayPort DPCD info from the CAC-1085 while doing 4K120 4:2:0 10bpc from macOS Ventura running on Mac mini 2018 with Radeon Pro W5700 eGPU. I don’t think macOS enables DSC or 4:4:4 or RGB by default with DisplayPort to HDMI 2.1 adapters. The info says the CAC-1085 can do 48 Gbps though. I’ll have to try doing some macOS patches and using an 8K60 or 4K240 EDID to find the real limits.

[code]

00000h: 12 14 c4 81 01 1d 01 84 00 00 04 00 00 00 84 00 // ................
00060h: 03 21 00 02 2b 04 01 00 00 1f 0e 11 08 00 00 00 // .!..+...........
00080h: 0b f0 1a 1e 5f 00 00 00 5f 00 00 00 5f 00 00 00 // ...._..._..._...
00090h: bf 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 // ................
00100h: 1e 84 00 02 02 02 02 10 01 00 00 00 00 00 00 00 // ................
00200h: 41 04 77 77 01 00 22 22 00 00 00 00 00 00 00 00 // A.ww..""........
00210h: 00 80 00 80 00 80 00 80 00 00 00 00 00 00 00 00 // ................
00240h: 00 00 00 00 00 00 20 00 00 00 00 00 00 00 00 00 // ...... .........
00280h: 00 00 80 00 00 00 00 00 00 00 00 00 00 00 00 00 // ................
00300h: 00 10 fa 41 41 50 4c 00 00 01 01 00 00 00 00 00 // ...AAPL.........
00310h: 00 10 fa 70 48 44 4d 49 67 10 01 00 01 04 20 01 // ...pHDMIg..... .
00500h: 00 e0 4c 44 70 31 2e 34 00 20 82 00 00 00 00 00 // ..LDp1.4. ......
00510h: 28 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 // (...............
00600h: 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 // ................
02000h: 00 00 41 04 00 00 00 00 00 00 00 00 77 77 01 00 // ..A.........ww..
02200h: 14 1e c4 81 01 1d 01 84 00 00 04 00 00 00 84 00 // ................
02210h: 0a 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 // ................
03000h: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 80 // ................
03030h: 00 00 00 00 03 00 21 00 00 00 00 01 00 00 00 00 // ......!.........

Receiver Capability
00000h DPCD_REV: 1.2
00001h MAX_LINK_RATE: HBR2
00002h MAX_LANE_COUNT: 4, ENHANCED_FRAME_CAP, TPS3_SUPPORTED
00003h MAX_DOWNSPREAD: MAX_DOWNSPREAD_0_5, TPS4_SUPPORTED
00004h NORP: 2
00005h DOWNSTREAMPORT_PRESENT: DWN_STRM_PORT_PRESENT, PORT_TYPE = DVI or HDMI, FORMAT_CONVERSION, DETAILED_CAP_INFO_AVAILABLE
00006h MAIN_LINK_CHANNEL_CODING: CAP_ANSI_8B10B
00007h DOWN_STREAM_PORT_COUNT: 4, OUI_SUPPORT
0000ah RECEIVE_PORT_1_CAP_0: ASSOCIATED_TO_PRECEDING_PORT
0000eh TRAINING_AUX_RD_INTERVAL: 16ms all, EXTENDED_RECEIVER_CAP_FIELD_PRESENT
00060h DSC_SUPPORT: DSC_DECOMPRESSION_IS_SUPPORTED, ?0x02
00061h DSC_REV: 1.2
00062h DSC_RC_BUF_BLK_SIZE: 1kB
00063h DSC_RC_BUF_SIZE: 2 * DSC_RC_BUF_BLK_SIZE
00064h DSC_SLICE_CAP_1 & 2: 1, 2, 4, 8 max slices per DisplayPort DSC sink
00065h DSC_LINE_BUF_BIT_DEPTH: 13 bits
00066h DSC_BLK_PREDICTION_SUPPORT: DSC_BLK_PREDICTION_IS_SUPPORTED
00067h DSC_MAX_BITS_PER_PIXEL: 0 bpp
00069h DSC_DEC_COLOR_FORMAT_CAP: RGB, YCbCr 4:4:4, YCbCr 4:2:2 Simple, YCbCr 4:2:2 Native, YCbCr 4:2:0 Native
0006ah DSC_DEC_COLOR_DEPTH_CAP: 8, 10, 12 bpc
0006bh DSC_PEAK_THROUGHPUT: MODE_0 = 340 Mp/s, MODE_1 = 340 Mp/s
0006ch DSC_MAX_SLICE_WIDTH: 2560 pixels
0006fh DSC_BITS_PER_PIXEL_INC: 1/16 bpp
00080h DOWNSTREAM_PORT_0: PORT_TYPE = HDMI, HPD aware, 600 MHz max TMDS clock, DS_MAX_BPC = 12bpc, PCON_MAX_FRL_BW = 48Gbps, YCBCR422_PASS_THROUGH, YCBCR420_PASS_THROUGH, YCBCR444_TO_422_CONV, YCBCR444_TO_420_CONV
00084h DOWNSTREAM_PORT_1: PORT_TYPE = ?7 (reserved), HPD aware, ?0x50
00088h DOWNSTREAM_PORT_2: PORT_TYPE = ?7 (reserved), HPD aware, ?0x50
0008ch DOWNSTREAM_PORT_3: PORT_TYPE = ?7 (reserved), HPD aware, ?0x50
00090h FEC_CAPABILITY: FEC_CAPABLE, FEC_UNCORR_BLK_ERROR_COUNT_CAP, FEC_CORR_BLK_ERROR_COUNT_CAP, FEC_BIT_ERROR_COUNT_CAP, PARITY_BLOCK_ERROR_COUNT_CAP, PARITY_ERROR_COUNT_CAP, FEC_ERROR_REPORTING_POLICY_SUPPORTED
Link Configuration
00100h LINK_BW_SET: HBR3
00101h LANE_COUNT_SET: 4, ENHANCED_FRAME_EN
00103h TRAINING_LANE0_SET: TRAIN_VOLTAGE_SWING_LEVEL_2, TRAIN_PRE_EMPH_LEVEL_0
00104h TRAINING_LANE1_SET: TRAIN_VOLTAGE_SWING_LEVEL_2, TRAIN_PRE_EMPH_LEVEL_0
00105h TRAINING_LANE2_SET: TRAIN_VOLTAGE_SWING_LEVEL_2, TRAIN_PRE_EMPH_LEVEL_0
00106h TRAINING_LANE3_SET: TRAIN_VOLTAGE_SWING_LEVEL_2, TRAIN_PRE_EMPH_LEVEL_0
00107h DOWNSPREAD_CTRL: SPREAD_AMP_0_5
00108h MAIN_LINK_CHANNEL_CODING_SET: SET_ANSI_8B10B
00160h DSC_ENABLE: disabled
Link/Sink Device Status
00200h SINK_COUNT: 1, SINK_CP_READY
00201h DEVICE_SERVICE_IRQ_VECTOR: CP_IRQ
00202h LANE0_1_STATUS: LANE0 = CR_DONE, CHANNEL_EQ_DONE, SYMBOL_LOCKED
00202h LANE0_1_STATUS: LANE1 = CR_DONE, CHANNEL_EQ_DONE, SYMBOL_LOCKED
00203h LANE2_3_STATUS: LANE2 = CR_DONE, CHANNEL_EQ_DONE, SYMBOL_LOCKED
00203h LANE2_3_STATUS: LANE3 = CR_DONE, CHANNEL_EQ_DONE, SYMBOL_LOCKED
00204h LANE_ALIGN_STATUS_UPDATED: INTERLANE_ALIGN_DONE
00206h ADJUST_REQUEST_LANE0_1: LANE0 = ADJUST_VOLTAGE_SWING_LEVEL_2, ADJUST_PRE_EMPHASIS_LEVEL_0
00206h ADJUST_REQUEST_LANE0_1: LANE1 = ADJUST_VOLTAGE_SWING_LEVEL_2, ADJUST_PRE_EMPHASIS_LEVEL_0
00207h ADJUST_REQUEST_LANE2_3: LANE2 = ADJUST_VOLTAGE_SWING_LEVEL_2, ADJUST_PRE_EMPHASIS_LEVEL_0
00207h ADJUST_REQUEST_LANE2_3: LANE3 = ADJUST_VOLTAGE_SWING_LEVEL_2, ADJUST_PRE_EMPHASIS_LEVEL_0
00210h SYMBOL_ERROR_COUNT_LANE0: 0, valid
00212h SYMBOL_ERROR_COUNT_LANE1: 0, valid
00214h SYMBOL_ERROR_COUNT_LANE2: 0, valid
00216h SYMBOL_ERROR_COUNT_LANE3: 0, valid
00246h TEST_SINK_MISC: TST_CRC_COUNT = 0, TEST_CRC_SUPPORTED
00282h FAUX_BACK_CHANNEL_SYMBOL_ERROR_COUNT_CONTROL: COUNT_SYMBOL
Source Device-Specific
00300h SOURCE_OUI: 00-10-FA = Apple, Inc.
00303h SOURCE_ID: 41 41 50 4c 00 00 // AAPL..
00309h SOURCE_HW_REV: 0.1
0030ah SOURCE_SW_REV: 1.0
00310h : 00 10 fa 70 48 44 4d 49 67 10 01 00 01 04 20 01 // ...pHDMIg..... .
Branch Device-Specific
00500h BRANCH_OUI: 00-E0-4C = REALTEK SEMICONDUCTOR CORP.
00503h BRANCH_ID: 44 70 31 2e 34 00 // Dp1.4.
00509h BRANCH_HW_REV: 2.0
0050ah BRANCH_SW_REV: 130.0
00510h : 28 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 // (...............
Sink Control
00600h SET_POWER: SET_POWER_D0
DPRX ESI (Event Status Indicator)
02002h SINK_COUNT_ESI: 1, SINK_CP_READY
02003h DEVICE_SERVICE_IRQ_VECTOR_ESI0: CP_IRQ
0200ch LANE0_1_STATUS_ESI: LANE0 = CR_DONE, CHANNEL_EQ_DONE, SYMBOL_LOCKED
0200ch LANE0_1_STATUS_ESI: LANE1 = CR_DONE, CHANNEL_EQ_DONE, SYMBOL_LOCKED
0200dh LANE2_3_STATUS_ESI: LANE2 = CR_DONE, CHANNEL_EQ_DONE, SYMBOL_LOCKED
0200dh LANE2_3_STATUS_ESI: LANE3 = CR_DONE, CHANNEL_EQ_DONE, SYMBOL_LOCKED
0200eh LANE_ALIGN_STATUS_UPDATED_ESI: INTERLANE_ALIGN_DONE
Extended Receiver Capability
02200h DP13_DPCD_REV: 1.4
02201h MAX_LINK_RATE: HBR3
02202h MAX_LANE_COUNT: 4, ENHANCED_FRAME_CAP, TPS3_SUPPORTED
02203h MAX_DOWNSPREAD: MAX_DOWNSPREAD_0_5, TPS4_SUPPORTED
02204h NORP: 2
02205h DOWNSTREAMPORT_PRESENT: DWN_STRM_PORT_PRESENT, PORT_TYPE = DVI or HDMI, FORMAT_CONVERSION, DETAILED_CAP_INFO_AVAILABLE
02206h MAIN_LINK_CHANNEL_CODING: CAP_ANSI_8B10B
02207h DOWN_STREAM_PORT_COUNT: 4, OUI_SUPPORT
0220ah RECEIVE_PORT_1_CAP_0: ASSOCIATED_TO_PRECEDING_PORT
0220eh TRAINING_AUX_RD_INTERVAL: 16ms all, EXTENDED_RECEIVER_CAP_FIELD_PRESENT
02210h DPRX_FEATURE_ENUMERATION_LIST: SST_SPLIT_SDP_CAP, VSC_SDP_EXT_FOR_COLORIMETRY_SUPPORTED
PCON HDMI CONFIG PPS Override Buffer
0300fh CEC_LOGICAL_ADDRESS_MASK_2: CEC_LOGICAL_ADDRESS_15
03030h : 00 00 00 00 03 00 // ......
03036h PCON_HDMI_POST_FRL_STATUS: PCON_HDMI_LINK_MODE = PCON_HDMI_MODE_FRL, PCON_HDMI_FRL_TRAINED_BW = 40Gbps
0303bh PCON_HDMI_TX_LINK_STATUS: PCON_HDMI_TX_LINK_ACTIVE

[/code]

[joevt]

I don’t know why they don’t have a download section for firmware updates. The firmware update tools come from the manufacturer of the chip – usually Synaptics. Synaptics has some tools in the Windows App Store but those don’t include the firmware updates.

[joevt]

Ok, a Thunderbolt 4 port should definitely support DisplayPort Alt Mode, otherwise Intel wouldn’t let them use the Thunderbolt 4 name.

I’m not sure what could be the problem. Are drivers up to date?

The Device Manager shows USB-C Dongle but doesn’t show a display is connected?

Can you test the adapter with any other computer?

Can you test the adapter with a Thunderbolt 3 dock?

You could try asking [email protected] for a firmware update for the adapter. If there’s no update, you could try the HDCP-OFF firmware.

[joevt]

Are you sure the USB-C port that you connected the adapter to supports DisplayPort Alt Mode? In other words have you tested any other display with the USB-C port?

[joevt]

USB-C to HDMI cables cannot be bidirectional.

Maybe the Asus MB169C+ requires 2 lanes DisplayPort + USB 3.x while the CAC-1332 and CAC-1336 only support 4 lanes of DisplayPort + USB 2.0. The only place you’re going to find a real DisplayPort + USB 3.x to USB-C with DisplayPort Alt Mode adapter that supports both modes (“2 lanes DisplayPort + USB 3.x” or “4 lanes DisplayPort + USB 2.0”) is with a PCIe card like the Sunix UPD2018 or a Thunderbolt 3 or Thunderbolt 4 add-in card like the Gigabyte GC-TITAN RIDGE or GC-MAPLE RIDGE.
https://hardforum.com/threads/use-usb-c-monitor-without-usb-c.1911817

I’m not sure what you mean by “if I connect a USB-C to HDMI cable or USB-C to Displayport cable”. The MB169C+ only accepts USB-C input, so how does a USB-C to HDMI or USB-C to DisplayPort cable help?

I’m not sure what you mean by “both still work even if I unplug the 5V input power cable”. How can it work without power? I think you mean that the CAC-1332 doesn’t require its +5V Micro US power input if the display has its own power input.

Regarding the Skydata problem, I had to connect a powered USB-C hub to the CAC-1336 to get it to output a USB-C DisplayPort Alt Mode signal (4 lanes DisplayPort + USB 2.0) to a USB-C adapter. The USB-C hub that I used was actually the CalDigit Element Hub which is a Thunderbolt 4 hub. The USB-C output of the CAC-1336 is not well specced compared to the USB-C output from the Thunderbolt 4 hub. It’s kind of sad that I have to connect a +$100 hub to use the CAC-1336. Perhaps the CAC-1336 works with USB-C displays that have a USB-C input and can accept a “4 lanes DisplayPort + USB 2.0” signal but that’s all it can work with.

[joevt]

The EDIDs of both displays both make no mention of HDCP support. That might not be an indication of lack of HDCP support. Did you test whether different connection types produce different EDIDs? You said you got this EDID by using an HDMI connection. Was it connected to the DVI port or the HDMI port of the display? The EDID shows modes for 1080p 60, 100, 120, and 144 Hz.

A firmware update should work to convert your adapter to the HDCP OFF version. Send an e-mail to [email protected] It might take a while for them to respond.

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