Re: [REGRESSION][BISECTED] "xHCI host controller not responding, assume dead" on stable kernel > 6.8.7

Mika Westerberg
2024-05-21T11:26:58Z

On Tue, May 21, 2024 at 11:12:10AM +0200, Gia wrote:
> Here you have the output from the dock upstream port:
>
> sudo tbdump -r 2 -a 1 -vv -N2 LANE_ADP_CS_0
>
> 0x0036 0x003c013e 0b00000000 00111100 00000001 00111110 .... LANE_ADP_CS_0
> [00:07] 0x3e Next Capability Pointer
> [08:15] 0x1 Capability ID
> [16:19] 0xc Supported Link Speeds
> [20:21] 0x3 Supported Link Widths (SLW)
> [22:23] 0x0 Gen 4 Asymmetric Support (G4AS)
> [26:26] 0x0 CL0s Support
> [27:27] 0x0 CL1 Support
> [28:28] 0x0 CL2 Support
> 0x0037 0x0828003c 0b00001000 00101000 00000000 00111100 .... LANE_ADP_CS_1
> [00:03] 0xc Target Link Speed → Router shall attempt Gen 3 speed
> [04:05] 0x3 Target Link Width → Establish a Symmetric Link
> [06:07] 0x0 Target Asymmetric Link → Establish Symmetric Link
> [10:10] 0x0 CL0s Enable
> [11:11] 0x0 CL1 Enable
> [12:12] 0x0 CL2 Enable
> [14:14] 0x0 Lane Disable (LD)
> [15:15] 0x0 Lane Bonding (LB)
> [16:19] 0x8 Current Link Speed → Gen 2
> [20:25] 0x2 Negotiated Link Width → Symmetric Link (x2)
> [26:29] 0x2 Adapter State → CL0
> [30:30] 0x0 PM Secondary (PMS)

Hmm, okay both sides announce support of Gen3 yet the link is Gen2 which
makes me still suspect the cable, or the connection in general. I
suggest, if you have, try with another Thunderbolt cable.