Copilot doesn't work in WSL2 but works in windows. #279294
Description
Does this issue occur when all extensions are disabled?: Yes/No
- VS Code Version:
Version: 1.105.1
Commit: 7d842fb
Date: 2025-10-14T22:33:36.618Z
Electron: 37.6.0
ElectronBuildId: 12502201
Chromium: 138.0.7204.251
Node.js: 22.19.0
V8: 13.8.258.32-electron.0 - OS Version:
PRETTY_NAME="Ubuntu 22.04.5 LTS"
NAME="Ubuntu"
VERSION_ID="22.04"
VERSION="22.04.5 LTS (Jammy Jellyfish)"
VERSION_CODENAME=jammy
Steps to Reproduce:
Open vscode in WSL2, using copilot, it doesn't work. The output of "GitHub Copilot Chat" are below:
[error] TypeError: fetch failed
at node:internal/deps/undici/undici:13510:13
at processTicksAndRejections (node:internal/process/task_queues:105:5)
at DO._fetch (/home/aaron/.vscode-server/extensions/github.copilot-chat-0.32.5/dist/extension.js:1672:33575)
at uXt (/home/aaron/.vscode-server/extensions/github.copilot-chat-0.32.5/dist/extension.js:1672:36301)
at XS.fetch (/home/aaron/.vscode-server/extensions/github.copilot-chat-0.32.5/dist/extension.js:1672:38730)
at Ty._fetchModels (/home/aaron/.vscode-server/extensions/github.copilot-chat-0.32.5/dist/extension.js:2949:4894)
at Ty.getChatModelFromFamily (/home/aaron/.vscode-server/extensions/github.copilot-chat-0.32.5/dist/extension.js:2949:3491)
at YG.getChatEndpoint (/home/aaron/.vscode-server/extensions/github.copilot-chat-0.32.5/dist/extension.js:2949:14890)
at LU._provideLanguageModelChatInfo (/home/aaron/.vscode-server/extensions/github.copilot-chat-0.32.5/dist/extension.js:614:1574)
at vy.$provideLanguageModelChatInfo (file:///home/aaron/.vscode-server/bin/7d842fb85a0275a4a8e4d7e040d2625abbf7f084/out/vs/workbench/api/node/extensionHostProcess.js:116:29352)
Error: read ECONNRESET
at TLSWrap.onStreamRead (node:internal/stream_base_commons:216:20): Failed to fetch models (ee7907d7-f478-4731-a3de-ddfbe69555ce)
I captured pcap, the pcap shows the copilot server reset tcp connection immediately when it received "TLS Client Hello", below are TLS packet details:
Frame 18085: 474 bytes on wire (3792 bits), 474 bytes captured (3792 bits) on interface \Device\NPF_{694165F2-E1BB-44FB-A9E9-7FFB154FCC5C}, id 0
Ethernet II, Src: Dell_1a:1e:15 (a0:29:19:1a:1e:15), Dst: Cisco_23:82:fa (44:ae:25:23:82:fa)
Internet Protocol Version 4, Src: 10.22.6.64, Dst: 140.82.112.21
Transmission Control Protocol, Src Port: 48602, Dst Port: 443, Seq: 1, Ack: 1, Len: 408
Transport Layer Security
TLSv1 Record Layer: Handshake Protocol: Client Hello
Content Type: Handshake (22)
Version: TLS 1.0 (0x0301)
Length: 403
Handshake Protocol: Client Hello
Handshake Type: Client Hello (1)
Length: 399
Version: TLS 1.2 (0x0303)
Random: 998e15c4c87f57b7c236a63d623ca9fc33167d6e001df223c344b250f03bfbe4
Session ID Length: 32
Session ID: 573bda5757686487bc9228fd72e20178d66f6bc9fafe5c9a1c115a6e969fff27
Cipher Suites Length: 118
Cipher Suites (59 suites)
Cipher Suite: TLS_AES_256_GCM_SHA384 (0x1302)
Cipher Suite: TLS_CHACHA20_POLY1305_SHA256 (0x1303)
Cipher Suite: TLS_AES_128_GCM_SHA256 (0x1301)
Cipher Suite: TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (0xc02f)
Cipher Suite: TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 (0xc02b)
Cipher Suite: TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (0xc030)
Cipher Suite: TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384 (0xc02c)
Cipher Suite: TLS_DHE_RSA_WITH_AES_128_GCM_SHA256 (0x009e)
Cipher Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 (0xc027)
Cipher Suite: TLS_DHE_RSA_WITH_AES_128_CBC_SHA256 (0x0067)
Cipher Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 (0xc028)
Cipher Suite: TLS_DHE_RSA_WITH_AES_256_CBC_SHA256 (0x006b)
Cipher Suite: TLS_DHE_DSS_WITH_AES_256_GCM_SHA384 (0x00a3)
Cipher Suite: TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 (0x009f)
Cipher Suite: TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256 (0xcca9)
Cipher Suite: TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 (0xcca8)
Cipher Suite: TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256 (0xccaa)
Cipher Suite: TLS_ECDHE_ECDSA_WITH_AES_256_CCM_8 (0xc0af)
Cipher Suite: TLS_ECDHE_ECDSA_WITH_AES_256_CCM (0xc0ad)
Cipher Suite: TLS_DHE_RSA_WITH_AES_256_CCM_8 (0xc0a3)
Cipher Suite: TLS_DHE_RSA_WITH_AES_256_CCM (0xc09f)
Cipher Suite: TLS_ECDHE_ECDSA_WITH_ARIA_256_GCM_SHA384 (0xc05d)
Cipher Suite: TLS_ECDHE_RSA_WITH_ARIA_256_GCM_SHA384 (0xc061)
Cipher Suite: TLS_DHE_DSS_WITH_ARIA_256_GCM_SHA384 (0xc057)
Cipher Suite: TLS_DHE_RSA_WITH_ARIA_256_GCM_SHA384 (0xc053)
Cipher Suite: TLS_DHE_DSS_WITH_AES_128_GCM_SHA256 (0x00a2)
Cipher Suite: TLS_ECDHE_ECDSA_WITH_AES_128_CCM_8 (0xc0ae)
Cipher Suite: TLS_ECDHE_ECDSA_WITH_AES_128_CCM (0xc0ac)
Cipher Suite: TLS_DHE_RSA_WITH_AES_128_CCM_8 (0xc0a2)
Cipher Suite: TLS_DHE_RSA_WITH_AES_128_CCM (0xc09e)
Cipher Suite: TLS_ECDHE_ECDSA_WITH_ARIA_128_GCM_SHA256 (0xc05c)
Cipher Suite: TLS_ECDHE_RSA_WITH_ARIA_128_GCM_SHA256 (0xc060)
Cipher Suite: TLS_DHE_DSS_WITH_ARIA_128_GCM_SHA256 (0xc056)
Cipher Suite: TLS_DHE_RSA_WITH_ARIA_128_GCM_SHA256 (0xc052)
Cipher Suite: TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384 (0xc024)
Cipher Suite: TLS_DHE_DSS_WITH_AES_256_CBC_SHA256 (0x006a)
Cipher Suite: TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256 (0xc023)
Cipher Suite: TLS_DHE_DSS_WITH_AES_128_CBC_SHA256 (0x0040)
Cipher Suite: TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA (0xc00a)
Cipher Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA (0xc014)
Cipher Suite: TLS_DHE_RSA_WITH_AES_256_CBC_SHA (0x0039)
Cipher Suite: TLS_DHE_DSS_WITH_AES_256_CBC_SHA (0x0038)
Cipher Suite: TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA (0xc009)
Cipher Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA (0xc013)
Cipher Suite: TLS_DHE_RSA_WITH_AES_128_CBC_SHA (0x0033)
Cipher Suite: TLS_DHE_DSS_WITH_AES_128_CBC_SHA (0x0032)
Cipher Suite: TLS_RSA_WITH_AES_256_GCM_SHA384 (0x009d)
Cipher Suite: TLS_RSA_WITH_AES_256_CCM_8 (0xc0a1)
Cipher Suite: TLS_RSA_WITH_AES_256_CCM (0xc09d)
Cipher Suite: TLS_RSA_WITH_ARIA_256_GCM_SHA384 (0xc051)
Cipher Suite: TLS_RSA_WITH_AES_128_GCM_SHA256 (0x009c)
Cipher Suite: TLS_RSA_WITH_AES_128_CCM_8 (0xc0a0)
Cipher Suite: TLS_RSA_WITH_AES_128_CCM (0xc09c)
Cipher Suite: TLS_RSA_WITH_ARIA_128_GCM_SHA256 (0xc050)
Cipher Suite: TLS_RSA_WITH_AES_256_CBC_SHA256 (0x003d)
Cipher Suite: TLS_RSA_WITH_AES_128_CBC_SHA256 (0x003c)
Cipher Suite: TLS_RSA_WITH_AES_256_CBC_SHA (0x0035)
Cipher Suite: TLS_RSA_WITH_AES_128_CBC_SHA (0x002f)
Cipher Suite: TLS_EMPTY_RENEGOTIATION_INFO_SCSV (0x00ff)
Compression Methods Length: 1
Compression Methods (1 method)
Compression Method: null (0)
Extensions Length: 208
Extension: server_name (len=37)
Type: server_name (0)
Length: 37
Server Name Indication extension
Server Name list length: 35
Server Name Type: host_name (0)
Server Name length: 32
Server Name: api.individual.githubcopilot.com
Extension: ec_point_formats (len=4)
Type: ec_point_formats (11)
Length: 4
EC point formats Length: 3
Elliptic curves point formats (3)
Extension: supported_groups (len=22)
Type: supported_groups (10)
Length: 22
Supported Groups List Length: 20
Supported Groups (10 groups)
Extension: session_ticket (len=0)
Type: session_ticket (35)
Length: 0
Data (0 bytes)
Extension: application_layer_protocol_negotiation (len=14)
Type: application_layer_protocol_negotiation (16)
Length: 14
ALPN Extension Length: 12
ALPN Protocol
Extension: encrypt_then_mac (len=0)
Type: encrypt_then_mac (22)
Length: 0
Extension: extended_master_secret (len=0)
Type: extended_master_secret (23)
Length: 0
Extension: signature_algorithms (len=42)
Type: signature_algorithms (13)
Length: 42
Signature Hash Algorithms Length: 40
Signature Hash Algorithms (20 algorithms)
Signature Algorithm: ecdsa_secp256r1_sha256 (0x0403)
Signature Algorithm: ecdsa_secp384r1_sha384 (0x0503)
Signature Algorithm: ecdsa_secp521r1_sha512 (0x0603)
Signature Algorithm: ed25519 (0x0807)
Signature Algorithm: ed448 (0x0808)
Signature Algorithm: rsa_pss_pss_sha256 (0x0809)
Signature Algorithm: rsa_pss_pss_sha384 (0x080a)
Signature Algorithm: rsa_pss_pss_sha512 (0x080b)
Signature Algorithm: rsa_pss_rsae_sha256 (0x0804)
Signature Algorithm: rsa_pss_rsae_sha384 (0x0805)
Signature Algorithm: rsa_pss_rsae_sha512 (0x0806)
Signature Algorithm: rsa_pkcs1_sha256 (0x0401)
Signature Algorithm: rsa_pkcs1_sha384 (0x0501)
Signature Algorithm: rsa_pkcs1_sha512 (0x0601)
Signature Algorithm: SHA224 ECDSA (0x0303)
Signature Algorithm: SHA224 RSA (0x0301)
Signature Algorithm: SHA224 DSA (0x0302)
Signature Algorithm: SHA256 DSA (0x0402)
Signature Algorithm: SHA384 DSA (0x0502)
Signature Algorithm: SHA512 DSA (0x0602)
Extension: supported_versions (len=5)
Type: supported_versions (43)
Length: 5
Supported Versions length: 4
Supported Version: TLS 1.3 (0x0304)
Supported Version: TLS 1.2 (0x0303)
Extension: psk_key_exchange_modes (len=2)
Type: psk_key_exchange_modes (45)
Length: 2
PSK Key Exchange Modes Length: 1
PSK Key Exchange Mode: PSK with (EC)DHE key establishment (psk_dhe_ke) (1)
Extension: key_share (len=38)
[JA3 Fullstring [truncated]: 771,4866-4867-4865-49199-49195-49200-49196-158-49191-103-49192-107-163-159-52393-52392-52394-49327-49325-49315-49311-49245-49249-49239-49235-162-49326-49324-49314-49310-49244-49248-49238-49234-49188-106-49187-6]
[JA3: 1a28e69016765d92e3b381168d68922c]
Frame 41313: 64 bytes on wire (512 bits), 64 bytes captured (512 bits) on interface \Device\NPF_{694165F2-E1BB-44FB-A9E9-7FFB154FCC5C}, id 0
Ethernet II, Src: Cisco_23:82:fa (44:ae:25:23:82:fa), Dst: Dell_1a:1e:15 (a0:29:19:1a:1e:15)
Internet Protocol Version 4, Src: 140.82.112.21, Dst: 10.22.6.64
Transmission Control Protocol, Src Port: 443, Dst Port: 46820, Seq: 1, Ack: 409, Len: 10
Source Port: 443
Destination Port: 46820
[Stream index: 542]
[Conversation completeness: Complete, WITH_DATA (47)]
[TCP Segment Len: 10]
Sequence Number: 1 (relative sequence number)
Sequence Number (raw): 89023836
[Next Sequence Number: 11 (relative sequence number)]
Acknowledgment Number: 409 (relative ack number)
Acknowledgment number (raw): 2697953513
0101 .... = Header Length: 20 bytes (5)
Flags: 0x014 (RST, ACK)
Window: 0
[Calculated window size: 0]
[Window size scaling factor: 1024]
Checksum: 0x44f2 [unverified]
[Checksum Status: Unverified]
Urgent Pointer: 0
[Timestamps]
[SEQ/ACK analysis]
Reset cause: \001\002\003\004\005\006\a\b\t
But it works fine when I opened it in windows, I tried various ways to resolve it but failed.
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