vasilito
f31522130f
Build system (5 gaps hardened): - COOKBOOK_OFFLINE defaults to true (fork-mode) - normalize_patch handles diff -ruN format - New 'repo validate-patches' command (25/25 relibc patches) - 14 patched Qt/Wayland/display recipes added to protected list - relibc archive regenerated with current patch chain Boot fixes (fixable): - Full ISO EFI partition: 16 MiB → 1 MiB (matches mini, BIOS hardcoded 2 MiB offset) - D-Bus system bus: absolute /usr/bin/dbus-daemon path (was skipped) - redbear-sessiond: absolute /usr/bin/redbear-sessiond path (was skipped) - daemon framework: silenced spurious INIT_NOTIFY warnings for oneshot_async services (P0-daemon-silence-init-notify.patch) - udev-shim: demoted INIT_NOTIFY warning to INFO (expected for oneshot_async) - relibc: comprehensive named semaphores (sem_open/close/unlink) replacing upstream todo!() stubs - greeterd: Wayland socket timeout 15s → 30s (compositor DRM wait) - greeter-ui: built and linked (header guard unification, sem_compat stubs removed) - mc: un-ignored in both configs, fixed glib/libiconv/pcre2 transitive deps - greeter config: removed stale keymapd dependency from display/greeter services - prefix toolchain: relibc headers synced, _RELIBC_STDLIB_H guard unified Unfixable (diagnosed, upstream): - i2c-hidd: abort on no-I2C-hardware (QEMU) — process::exit → relibc abort - kded6/greeter-ui: page fault 0x8 — Qt library null deref - Thread panics fd != -1 — Rust std library on Redox - DHCP timeout / eth0 MAC — QEMU user-mode networking - hwrngd/thermald — no hardware RNG/thermal in VM - live preload allocation — BIOS memory fragmentation, continues on demand
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1.8 KiB
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45 lines
1.8 KiB
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.. _tablet-debugging:
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==============================================================================
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Debugging tablet issues
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==============================================================================
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.. _tablet-capabilities:
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------------------------------------------------------------------------------
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Required tablet capabilities
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------------------------------------------------------------------------------
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To handle a tablet correctly, libinput requires a set of capabilities
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on the device. When these capabilities are missing, libinput ignores the
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device and prints an error to the log. This error messages reads
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::
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missing tablet capabilities: xy pen btn-stylus resolution. Ignoring this device.
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or in older versions of libinput simply:
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::
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libinput bug: device does not meet tablet criteria. Ignoring this device.
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When a tablet is rejected, it is usually possible to verify the issue with
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the ``libinput record`` tool.
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- **xy** indicates that the tablet is missing the ``ABS_X`` and/or ``ABS_Y``
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axis. This indicates that the device is mislabelled and the udev tag
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``ID_INPUT_TABLET`` is applied to a device that is not a tablet.
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A bug should be filed against `systemd <http://github.com/systemd/systemd>`__.
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- **pen** or **btn-stylus** indicates that the tablet does not have the
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``BTN_TOOL_PEN`` or ``BTN_STYLUS`` bit set. libinput requires either or both
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of them to be present. This indicates a bug in the kernel driver
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or the HID descriptors of the device.
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- **resolution** indicates that the device does not have a resolution set
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for the x and y axes. This can be fixed with a hwdb entry, locate and read
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the `60-evdev.hwdb
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<https://github.com/systemd/systemd/blob/main/hwdb.d/60-evdev.hwdb>`__ file
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on your machine and file a pull request with the fixes against
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`systemd <https://github.com/systemd/systemd/>`__.
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