Lexonight1/thermalright-trcc-linux v9.5.7

Release v9.5.7

on GitHub

v9.5.7

User-facing fixes

• GUI no longer crashes on launch (regression from v9.5.4). The aboutToQuit.connect(t.suspend_all_devices) line introduced for #143 tried to weakref a bound method of Trcc, but Trcc has __slots__ without __weakref__, so Qt failed with TypeError: cannot create weak reference to 'Trcc' object. Every user on v9.5.4 / 5 / 6 had a broken GUI. v9.5.7 deletes the entire mechanism (see below) and the broken connect line goes with it.
• #143 LCD-sleep-on-shutdown re-fixed properly. v9.5.4 wrote sysfs power attributes from userspace, which silently failed for every unprivileged user (the actual install path for everyone) — the panel kept showing "USB communication lost" indefinitely until VBUS dropped, exactly the bug we claimed to fix. v9.5.7 reverts the userspace mechanism and replaces it with a one-line udev rule change: power/autosuspend_delay_ms=10000 instead of power/autosuspend=-1. The kernel now autosuspends the device ~10s after our process exits — same end state as Windows selective suspend, fully kernel-native, no shutdown hook needed. Re-run trcc setup-udev (or fresh-install the .deb / .rpm / .pkg.tar.zst) to apply.
• Brightness now consistently dims overlay text on animated themes (parity with static themes). The video-cache path composited the live text overlay on top of an already-dimmed bg+mask surface, leaving the metrics text at full brightness. Static themes baked the overlay first then dimmed everything together, so they always behaved correctly. v9.5.7 dims the cached text overlay alongside the L3 surface, so bg + mask + text all share the same brightness on every render path.
• trcc report now shows real SCSI handshake data. The report path skipped ControllerBuilder (where set_scsi_transport is normally wired), so SCSI users got SCSI transport factory not injected instead of FBL / resolution / raw response bytes. v9.5.7 wires the transport in report() before DebugReport.collect() runs.
• Theme cloud downloads no longer race on the temp file. Concurrent downloads of the same theme used to share a single <theme>.tmp path — first thread to rename won, second thread errored with [Errno 2] No such file or directory. v9.5.7 uses mkstemp so each download gets a unique temp; os.replace atomically commits the result. No more spurious download errors when multi-mirror retry kicks in.
• GUI no longer crashes mid-render on theme reload. update_video_cache_text and four other display sites had a TOCTOU race on self._cache: line N checked if self._cache and self._cache.active, line N+1 called self._cache.method(...), but a concurrent thread could null self._cache between the check and the call (Python attribute reads aren't atomic across two ops). v9.5.7 snapshots the cache reference into a local before each block. Affected the metrics tick, brightness change, rotation change, and video-tick render paths.

Architecture

• v9.5.4 #143 mechanism deleted. Platform.suspend_usb_device ABC method, LinuxPlatform.suspend_usb_device (sysfs walker), WindowsPlatform.suspend_usb_device, Trcc.suspend_all_devices, the trcc sleep CLI command, the POST /trcc/sleep API endpoint, the qapp.aboutToQuit.connect(...) GUI hook, the ExecStop= in trccd.service, and the 5+2 associated tests — all gone. -98 net lines. The kernel handles panel-sleep via the udev rule change above; userspace doesn't need to know about USB suspend.
• Quieter Qt log output. Extended QT_LOGGING_RULES to silence qt.qpa.theme.gnome warnings about xdg-desktop-portal-gnome failing to start — these were noise on every non-GNOME / portal-less session and weren't actionable for users. setdefault so anyone debugging can still override.