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A GPU is named from an embedded PCI ID table, the same on every machine

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The router has no lspci, so its GeminiLake chip came up as 'Intel GPU
3185' beside the identical chip's 'Intel UHD Graphics 600' on hamtv.
A trimmed pci.ids — the graphics devices of Intel, AMD and NVIDIA, and the
virtual GPUs, 115 KB — rides in the binary and is consulted first; lspci
is the fallback for a card newer than the table. scripts/pci-ids-gpu.sh
regenerates it from the hub's copy.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
This commit is contained in:
Mitchell-Johnson
2026-10-02 23:48:05 -07:00
co-authored by Claude Fable 5.1
parent b5cecce435
commit 3a58e265c6
6 changed files with 3085 additions and 2 deletions
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internal/metrics/gpu.go
+8 -1
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@@ -257,9 +257,16 @@ var (
bracketRe = regexp.MustCompile(`\[([^\]]+)\]`)
)
// gpuName is "Intel Arc A380", from lspci's bracketed marketing name when it has one.
// gpuName is "Intel Arc A380": from the embedded PCI ID table first, so the name is the
// same on every machine; from lspci for a card newer than the table; and failing both,
// the vendor and the raw device ID.
func gpuName(dev, bus, driver string) string {
if bus != "" {
vid := strings.TrimPrefix(strings.TrimSpace(readStr(dev+"/vendor")), "0x")
did := strings.TrimPrefix(strings.TrimSpace(readStr(dev+"/device")), "0x")
if vn, dn := pciName(vid, did); dn != "" {
return lspciName(vn + " " + dn)
}
if out, ok := runOut("lspci", "-s", bus); ok {
if _, desc, found := strings.Cut(out, ": "); found {
return lspciName(desc)