docs: Add known issues to iPad docs and add more links to iPad docs

Closes #1816

Author: nhooyr

doc/FAQ.md

@@ -22,7 +22,6 @@
 - [Heartbeat File](#heartbeat-file)
 - [Healthz endpoint](#healthz-endpoint)
 - [How does the config file work?](#how-does-the-config-file-work)
-- [Blank screen on iPad?](#blank-screen-on-ipad)
 - [Isn't an install script piped into sh insecure?](#isnt-an-install-script-piped-into-sh-insecure)
 - [How do I make my keyboard shortcuts work?](#how-do-i-make-my-keyboard-shortcuts-work)
 - [Differences compared to Theia?](#differences-compared-to-theia)
@@ -287,15 +286,6 @@ The `--config` flag or `$CODE_SERVER_CONFIG` can be used to change the config fi
 
 The default location also respects `$XDG_CONFIG_HOME`.
 
-## Blank screen on iPad?
-
-Unfortunately at the moment self signed certificates cause a blank screen on iPadOS
-
-There does seem to be a way to get it to work if you create your own CA and create a
-certificate using the CA and then import the CA onto your iPad.
-
-See [#1566](https://github.com/cdr/code-server/issues/1566#issuecomment-623159434).
-
 ## Isn't an install script piped into sh insecure?
 
 Please give

doc/guide.md

@@ -251,8 +251,7 @@ Visit `https://<your-domain-name>` to access `code-server`. Congratulations!
 
 ### Self Signed Certificate
 
-**note:** Self signed certificates do not work with iPad and will cause a blank page. You'll
-have to use [Let's Encrypt](#lets-encrypt) instead. See the [FAQ](./FAQ.md#blank-screen-on-ipad).
+**note:** Self signed certificates do not work with iPad normally. See [./ipad.md](./ipad.md) for details.
 
 Recommended reading: https://security.stackexchange.com/a/8112.
 

doc/ipad.md

@@ -3,13 +3,21 @@
 # iPad
 
 - [iPad](#ipad)
-  - [How to access code-server with a self signed certificate on iPad](#how-to-access-code-server-with-a-self-signed-certificate-on-ipad)
+  - [Known Issues](#known-issues)
+  - [How to access code-server with a self signed certificate on iPad?](#how-to-access-code-server-with-a-self-signed-certificate-on-ipad)
 
 <!-- END doctoc generated TOC please keep comment here to allow auto update -->
 
 # iPad
 
-## How to access code-server with a self signed certificate on iPad
+## Known Issues
+
+- Getting self signed certificates certificates to work is involved, see below.
+- Keyboard may disappear sometimes [#1313](https://github.com/cdr/code-server/issues/1313), [#979](https://github.com/cdr/code-server/issues/979)
+- Trackpad scrolling does not work [#1455](https://github.com/cdr/code-server/issues/1455)
+- See [issues tagged with the iPad label](https://github.com/cdr/code-server/issues?q=is%3Aopen+is%3Aissue+label%3AiPad) for more.
+
+## How to access code-server with a self signed certificate on iPad?
 
 Accessing a self signed certificate on iPad isn't as easy as accepting through all
 the security warnings. Safari will prevent WebSocket connections unless the certificate