Kindle Touch (4th Gen) Support?

[actionuiuc]

Hello,

I have a Kindle Touch (4th Gen) with firmware 5.3.7.3. It has built-in speakers and a 3.5mm headphone jack. Does the plugin support any readers without bluetooth headphones yet? I am getting the following errors:

1. Clicking 'Start Text-to-Speech from current page'
   -'No Bluetooth audio device connected. Reconnecting your headphones.... once connected, try again.'

2. In Audiobookshelf - Downloaded items - Click on item
   -Player opens but the following error is displayed: 'Audio playback failed; premature pipeline exit.'

Let me know if there is any other assistance I can provide. A supported device list might be helpful since I understand this is a work in progress. Hopefully I'll be able to use it more in the future!

Thanks,

Brian

[actionuiuc]

For #2 here is the crashlog:

[] Current time: 09/13/26-18:40:59
has monolibtic? no (libs/libkoreader-monolibtic.so: cannot open shared object file: No such file or directory)
lib_search_path: libs/?
lib_basic_format: lib%s.so
lib_version_format: lib%s.so.%s
[] Version: v2026.07.1

ffi.load: rt.so.1 (RTLD_GLOBAL)
ffi.findlib: utf8proc [3]
ffi.load: libs/libutf8proc.so.3
ffi.findlib: blitbuffer
ffi.load: libs/libblitbuffer.so
ffi.findlib: fbink_input [1]
ffi.load: libs/libfbink_input.so.1
[FBInk] /dev/input/event0: WM8962 Beep Generator = UNKNOWN
[FBInk] /dev/input/event1: imx-yoshi Headset = UNKNOWN
[FBInk] /dev/input/event2: whitney-button = KEY | HOME_BUTTON
[FBInk] /dev/input/event3: zforce = TOUCHSCREEN | KEY
[ko-input]: uevent listener ready for input device hotplug
[ko-input] Forked off fake event generator (pid: 7806)
09/13/26-18:41:00 INFO initializing for device KindleTouch
09/13/26-18:41:00 INFO framebuffer resolution: {
h = 800,
w = 600
} --[[table: 0x4035bb78]]
ffi.findlib: wrap-mupdf
ffi.load: libs/libwrap-mupdf.so
ffi.findlib: sqlite3 [0]
ffi.load: libs/libsqlite3.so.0
ffi.findlib: freetype [6]
ffi.load: libs/libfreetype.so.6
ffi.findlib: harfbuzz [0]
ffi.load: libs/libharfbuzz.so.0
ffi.findlib: zstd [1]
ffi.load: libs/libzstd.so.1
ffi.findlib: archive [13]
ffi.load: libs/libarchive.so.13
09/13/26-18:41:02 INFO Looking for plugins in directory: plugins
ffi.findlib: leptonica [6]
ffi.load: libs/libleptonica.so.6
ffi.findlib: k2pdfopt [2]
ffi.load: libs/libk2pdfopt.so.2
09/13/26-18:41:02 WARN PluginLoader: audiobook name in _meta.lua, is deprecated and will be ignored.
09/13/26-18:41:03 WARN PluginLoader: audiobookshelf name in _meta.lua, is deprecated and will be ignored.
09/13/26-18:41:03 WARN PluginLoader: bookshelf name in _meta.lua, is deprecated and will be ignored.
09/13/26-18:41:04 WARN PluginLoader: casualkochess name in _meta.lua, is deprecated and will be ignored.
09/13/26-18:41:04 WARN PluginLoader: connections name in _meta.lua, is deprecated and will be ignored.
09/13/26-18:41:04 WARN PluginLoader: kopet name in _meta.lua, is deprecated and will be ignored.
09/13/26-18:41:04 WARN PluginLoader: sudoku name in _meta.lua, is deprecated and will be ignored.
09/13/26-18:41:05 WARN PluginLoader: weather name in _meta.lua, is deprecated and will be ignored.
09/13/26-18:41:05 WARN PluginLoader: weatherlockscreen name in _meta.lua, is deprecated and will be ignored.
09/13/26-18:41:05 WARN PluginLoader: wordsearch name in _meta.lua, is deprecated and will be ignored.
09/13/26-18:41:05 WARN Audiobook: failed to load plugins/audiobook.koplugin/btmediacontrol.fix31.lua : cannot open plugins/audiobook.koplugin/btmediacontrol.fix31.lua: No such file or directory
09/13/26-18:41:05 WARN Audiobook: failed to load plugins/audiobook.koplugin/btmediacontrol.fix30.lua : cannot open plugins/audiobook.koplugin/btmediacontrol.fix30.lua: No such file or directory
09/13/26-18:41:05 WARN Audiobook: failed to load plugins/audiobook.koplugin/btmediacontrol.fix29.lua : cannot open plugins/audiobook.koplugin/btmediacontrol.fix29.lua: No such file or directory
09/13/26-18:41:05 WARN Audiobook: failed to load plugins/audiobook.koplugin/btmediacontrol.fix28.lua : cannot open plugins/audiobook.koplugin/btmediacontrol.fix28.lua: No such file or directory
09/13/26-18:41:05 WARN Audiobook: failed to load plugins/audiobook.koplugin/btmediacontrol.fix27.lua : cannot open plugins/audiobook.koplugin/btmediacontrol.fix27.lua: No such file or directory
09/13/26-18:41:05 WARN Audiobook: failed to load plugins/audiobook.koplugin/btmediacontrol.fix26.lua : cannot open plugins/audiobook.koplugin/btmediacontrol.fix26.lua: No such file or directory
09/13/26-18:41:05 WARN Audiobook: failed to load plugins/audiobook.koplugin/btmediacontrol.fix25.lua : cannot open plugins/audiobook.koplugin/btmediacontrol.fix25.lua: No such file or directory
09/13/26-18:41:05 WARN Audiobook: failed to load plugins/audiobook.koplugin/btmediacontrol.v25.lua : cannot open plugins/audiobook.koplugin/btmediacontrol.v25.lua: No such file or directory
ffi.findlib: fbink_input [1]
ffi.load: libs/libfbink_input.so.1
[FBInk] /dev/input/event0: WM8962 Beep Generator = UNKNOWN
[FBInk] /dev/input/event1: imx-yoshi Headset = UNKNOWN
[FBInk] /dev/input/event2: whitney-button = KEY | HOME_BUTTON
[FBInk] /dev/input/event3: zforce = TOUCHSCREEN | KEY
09/13/26-18:41:35 WARN MediaEngine: could not probe duration for plugins/audiobook.koplugin/abs_cache/c9a97025-1cb3-4b1c-b2e9-65e1cb2d7d59/audio/By the Shores of Silver Lake [B01MTMXWO8].m4b
09/13/26-18:41:35 WARN Audiobook: loading parser for plugins/audiobook.koplugin/abs_cache/c9a97025-1cb3-4b1c-b2e9-65e1cb2d7d59/audio/By the Shores of Silver Lake [B01MTMXWO8].m4b
09/13/26-18:41:35 WARN Audiobook: parser loaded, creating instance
09/13/26-18:41:35 WARN MetadataParser: parse() called for plugins/audiobook.koplugin/abs_cache/c9a97025-1cb3-4b1c-b2e9-65e1cb2d7d59/audio/By the Shores of Silver Lake [B01MTMXWO8].m4b plugin_dir= plugins/audiobook.koplugin/
09/13/26-18:41:35 WARN MetadataParser: parseWithFfprobe called for plugins/audiobook.koplugin/abs_cache/c9a97025-1cb3-4b1c-b2e9-65e1cb2d7d59/audio/By the Shores of Silver Lake [B01MTMXWO8].m4b
09/13/26-18:41:35 WARN MetadataParser: ffprobe not found
09/13/26-18:41:35 WARN MetadataParser: ffprobe not found, skipping
09/13/26-18:41:35 WARN MetadataParser: ffprobe returned nil chapters
09/13/26-18:41:35 WARN MetadataParser: sidecar returned nil chapters
09/13/26-18:41:35 WARN MetadataParser: found ffmpeg in plugin bin at plugins/audiobook.koplugin//bin/ffmpeg
09/13/26-18:41:35 WARN Audiobook: parser returned 0 chapters, cover= nil
09/13/26-18:41:35 WARN Audiobook: using ABS chapters for c9a97025-1cb3-4b1c-b2e9-65e1cb2d7d59 (33 chapters)
09/13/26-18:41:36 WARN MediaEngine: kindle-gst-play probe failed and no system gst-launch binary
09/13/26-18:41:36 WARN MediaEngine: selected ffmpeg-pipe backend
09/13/26-18:41:36 WARN MediaEngine: could not probe duration for plugins/audiobook.koplugin/abs_cache/c9a97025-1cb3-4b1c-b2e9-65e1cb2d7d59/audio/By the Shores of Silver Lake [B01MTMXWO8].m4b
09/13/26-18:41:36 WARN MediaEngine: loaded plugins/audiobook.koplugin/abs_cache/c9a97025-1cb3-4b1c-b2e9-65e1cb2d7d59/audio/By the Shores of Silver Lake [B01MTMXWO8].m4b backend= ffmpeg-pipe duration= nil
ffi.findlib: turbojpeg [0.5.0]
ffi.load: libs/libturbojpeg.so.0.5.0
09/13/26-18:41:36 WARN MediaEngine: Kindle A2DP keepalive started ( play-bridge ) PID= 7892
09/13/26-18:41:36 WARN MediaEngine: killing orphan Kindle audiobook pipelines ( play-preflight , content_only )
09/13/26-18:41:37 WARN MediaEngine: orphan Kindle audiobook pipeline cleanup done ( play-preflight )
09/13/26-18:41:37 WARN MediaEngine: killing orphan Kindle audiobook pipelines ( stop , content_only )
09/13/26-18:41:37 WARN MediaEngine: orphan Kindle audiobook pipeline cleanup done ( stop )
09/13/26-18:41:37 WARN MediaEngine: ffmpeg-pipe launch gen= 2 offset= 0 sink= aplay wav_out= no cmd= nice -n 10 "plugins/audiobook.koplugin/bin/ffmpeg" -i "plugins/audiobook.koplugin/abs_cache/c9a97025-1cb3-4b1c-b2e9-65e1cb2d7d59/audio/By the Shores of Silver Lake [B01MTMXWO8].m4b" -ar 44100 -ac 2 -f s16le - 2>/dev/null
Segmentation fault
aplay: playback:2309: read error
09/13/26-18:41:37 WARN BtMediaControl: Found media input: /dev/input/event1 name: imx-yoshi Headset name_hit= yes key_hit= no
09/13/26-18:41:37 WARN BtMediaControl: Opened AVRCP evdev: /dev/input/event1 fd: 25
09/13/26-18:41:37 WARN BtMediaControl: Media key map + adapters + handlers installed
09/13/26-18:41:37 WARN BtMediaControl: AVRCP evdev device found and opened
09/13/26-18:41:37 WARN MediaSync: started playback, sentences= 1 duration= 22442.643447
09/13/26-18:41:37 WARN BtMediaControl: Found media input: /dev/input/event1 name: imx-yoshi Headset name_hit= yes key_hit= no
09/13/26-18:41:37 WARN BtMediaControl: AVRCP device already opened: /dev/input/event1
09/13/26-18:41:37 WARN BtMediaControl: AVRCP evdev device found and opened
09/13/26-18:41:38 WARN MediaEngine: ffmpeg PID = 7925
09/13/26-18:41:39 WARN MediaEngine: premature pipeline exit at 4.647 dur= 22442.643447 — treating as fail (A2DP recovery)
09/13/26-18:41:39 ERROR MediaSync: playback failed: premature pipeline exit
09/13/26-18:41:39 WARN MediaEngine: killing orphan Kindle audiobook pipelines ( stop )
09/13/26-18:41:40 WARN MediaEngine: orphan Kindle audiobook pipeline cleanup done ( stop )
09/13/26-18:41:40 WARN MediaSync: stopped
09/13/26-18:41:59 WARN Audiobook: onCloseWidget event received
09/13/26-18:41:59 WARN Audiobook: stopReadAlong() called
09/13/26-18:41:59 WARN MediaEngine: killing orphan Kindle audiobook pipelines ( stop )
09/13/26-18:42:00 WARN MediaEngine: orphan Kindle audiobook pipeline cleanup done ( stop )
[ko-input] Closed input device with fd: 25 @ idx: 3 (matched by fd)
09/13/26-18:42:00 WARN BtMediaControl: Closed AVRCP evdev: /dev/input/event1
09/13/26-18:42:01 INFO UIManager: No dialogs left to show
09/13/26-18:42:01 INFO Tearing down UIManager with exit code: 0
[ko-input] Closed input device with fd: 17 @ idx: 2 (matched by idx)
[ko-input] Closed input device with fd: 16 @ idx: 1 (matched by idx)
[ko-input] Closed input device with fd: 15 @ idx: 0 (matched by idx)
[ue_wait_for_event:269] poll: Interrupted system call
lipc-wait-event exited normally with status: 0