# NousResearch/hermes-agent · xterm.js WebGL renderer compatibility issues and fixes

## Open now

- Nothing open on GitHub.

These issues and PRs concern problems with the xterm.js WebGL renderer in the dashboard, including unavailability on Linux VPS environments, glyph atlas corruption on Wayland, and garbled Unicode box-drawing characters in Safari. Several fixes address pre-checking WebGL availability and patching renderer behavior for affected environments.

## TL;DR

- 3 member(s): 0 open issue(s), 1 closed issue(s), 0 open PR(s), 1 merged PR(s), 1 PR(s) closed without merging.
- A fix was merged to main in PR #133937. Verify it addresses your case.
- **Recommended:** read PR #133937 (and any competing PRs below) before filing. Confirm the merged change covers your symptom.

## Maintainer resolution verdict

- Internal-tracker verdict over this cluster's issue members: `resolved` · deciding PR(s): `pr-133937`. This is distinct from the fix status above. Weigh it yourself.

## How this cluster was grouped

- Link evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.
- Pairwise link density `0.67`: the share of member pairs that carry a link, counting a structural link in full and a relevance-only link at 0.36. `1.00` means every pair is linked.

## Closed / duplicate issues

- #45520: Dashboard /chat: WebGL unavailable on Linux VPS (llvmpipe) — (regl) webgl not supported

## Prior & competing PRs

- **#133937: fix(dashboard): gate the chat xterm WebGL renderer and fall back to DOM**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`
  - files: `web/src/lib/chat-channel-id.test.ts`, `web/src/lib/chat-channel-id.ts`, `web/src/lib/chat-copy-last.ts`, `web/src/lib/chat-image-drop.ts`, `web/src/lib/xterm-webgl-gating.test.ts`, `web/src/lib/xterm-webgl-gating.ts`, `web/src/pages/ChatPage.test.tsx`, `web/src/pages/ChatPage.tsx`
- **#45528: fix(dashboard): pre-check WebGL availability before loading addon**. closed without merge
  - maintainer direction: category `superseded_by_pr`; implication `superseded`

## Fix status

- Merged to main in PR #133937 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-10-06`.
- Subsystem: `dashboard`