** Description changed:
I ports Ubuntu touch to LG L90 Dual. When I upgraded my device from
20151218.1 to 20151221 (channel rc-proposed), the touchscreen stopped
working. A discussion in IRC with @anpok_ suggesting that it may come
- from changing input system to libevent.
-
- $ udevadm test-builtin input_id /devices/gpio_keys.70/input/input2/
- calling: test-builtin
- === trie on-disk ===
- tool version: 219
- file size: 6711498 bytes
- header size 80 bytes
- strings 1721914 bytes
- nodes 4989504 bytes
- Load module index
- Network interface NamePolicy= disabled on kernel command line, ignoring.
- timestamp of '/etc/systemd/network' changed
- timestamp of '/usr/lib/systemd/network' changed
- Parsed configuration file /lib/systemd/network/99-default.link
- Parsed configuration file /etc/systemd/network/00-rmnet-kernel.link
- Created link configuration context.
- ID_INPUT=1
- capabilities/ev raw kernel attribute: 3
- capabilities/ev decoded bit map:
- bit 0: 00000003
- capabilities/abs raw kernel attribute: 0
- capabilities/abs decoded bit map:
- capabilities/rel raw kernel attribute: 0
- capabilities/rel decoded bit map:
- capabilities/key raw kernel attribute: 4000000 0 0 0 c0040 0 0 0
- capabilities/key decoded bit map:
- bit 0: 00000000
- bit 32: 00000000
- bit 64: 00000000
- bit 96: 000C0040
- bit 128: 00000000
- bit 160: 00000000
- bit 192: 00000000
- bit 224: 04000000
- properties raw kernel attribute: 0
- properties decoded bit map:
- test_key: checking bit block 0 for any keys; found=0
- test_key: checking bit block 32 for any keys; found=0
- test_key: checking bit block 64 for any keys; found=0
- test_key: checking bit block 96 for any keys; found=1
- test_key: checking bit block 128 for any keys; found=1
- test_key: checking bit block 160 for any keys; found=1
- test_key: checking bit block 192 for any keys; found=1
- test_key: checking bit block 224 for any keys; found=1
- ID_INPUT_KEY=1
- Unload module index
- Unloaded link configuration context.
+ from changing input system to udev/libevdev/libinput.
+
+ The following udevadm output is most likely from the Touch Screen:
$ udevadm test-builtin input_id /devices/virtual/input/input0/
calling: test-builtin
=== trie on-disk ===
tool version: 219
file size: 6711498 bytes
header size 80 bytes
strings 1721914 bytes
nodes 4989504 bytes
Load module index
Network interface NamePolicy= disabled on kernel command line, ignoring.
timestamp of '/etc/systemd/network' changed
timestamp of '/usr/lib/systemd/network' changed
Parsed configuration file /lib/systemd/network/99-default.link
Parsed configuration file /etc/systemd/network/00-rmnet-kernel.link
Created link configuration context.
ID_INPUT=1
capabilities/ev raw kernel attribute: b
capabilities/ev decoded bit map:
bit 0: 0000000B
capabilities/abs raw kernel attribute: 6718000 0
capabilities/abs decoded bit map:
bit 0: 00000000
bit 32: 06718000
capabilities/rel raw kernel attribute: 0
capabilities/rel decoded bit map:
capabilities/key raw kernel attribute: 400 0 0 2000000 0 1000 40000800 100000
0 10000000 0
capabilities/key decoded bit map:
bit 0: 00000000
bit 32: 10000000
bit 64: 00000000
bit 96: 00100000
bit 128: 40000800
bit 160: 00001000
bit 192: 00000000
bit 224: 02000000
bit 256: 00000000
bit 288: 00000000
bit 320: 00000400
properties raw kernel attribute: 0
properties decoded bit map:
test_key: checking bit block 0 for any keys; found=0
test_key: checking bit block 32 for any keys; found=1
test_key: checking bit block 64 for any keys; found=1
test_key: checking bit block 96 for any keys; found=1
test_key: checking bit block 128 for any keys; found=1
test_key: checking bit block 160 for any keys; found=1
test_key: checking bit block 192 for any keys; found=1
test_key: checking bit block 224 for any keys; found=1
ID_INPUT_KEY=1
Unload module index
Unloaded link configuration context.
- $ udevadm test-builtin input_id /devices/virtual/input/input1/
+ The driver claims that is provides the multi touch axis touch major,
+ touch minor, tracking id, x, y, tool type and slot id. So apart from
+ missing properties like DIRECT it seems to be a normal touch screen, but
+ udev clearly does not detect it properly.
+
+
+ ----------------------------------------------------------
+ The other devices are probably not the touchscreen...
+
+ $ udevadm test-builtin input_id /devices/gpio_keys.70/input/input2/
calling: test-builtin
=== trie on-disk ===
tool version: 219
file size: 6711498 bytes
header size 80 bytes
strings 1721914 bytes
nodes 4989504 bytes
Load module index
Network interface NamePolicy= disabled on kernel command line, ignoring.
timestamp of '/etc/systemd/network' changed
timestamp of '/usr/lib/systemd/network' changed
Parsed configuration file /lib/systemd/network/99-default.link
Parsed configuration file /etc/systemd/network/00-rmnet-kernel.link
Created link configuration context.
ID_INPUT=1
capabilities/ev raw kernel attribute: 3
capabilities/ev decoded bit map:
- bit 0: 00000003
- capabilities/abs raw kernel attribute: 0
- capabilities/abs decoded bit map:
- capabilities/rel raw kernel attribute: 0
- capabilities/rel decoded bit map:
- capabilities/key raw kernel attribute: 100000 0 0 0
- capabilities/key decoded bit map:
- bit 0: 00000000
- bit 32: 00000000
- bit 64: 00000000
- bit 96: 00100000
- properties raw kernel attribute: 10
- properties decoded bit map:
- bit 0: 00000010
+ bit 0: 00000003
+ capabilities/abs raw kernel attribute: 0
+ capabilities/abs decoded bit map:
+ capabilities/rel raw kernel attribute: 0
+ capabilities/rel decoded bit map:
+ capabilities/key raw kernel attribute: 4000000 0 0 0 c0040 0 0 0
+ capabilities/key decoded bit map:
+ bit 0: 00000000
+ bit 32: 00000000
+ bit 64: 00000000
+ bit 96: 000C0040
+ bit 128: 00000000
+ bit 160: 00000000
+ bit 192: 00000000
+ bit 224: 04000000
+ properties raw kernel attribute: 0
+ properties decoded bit map:
test_key: checking bit block 0 for any keys; found=0
test_key: checking bit block 32 for any keys; found=0
test_key: checking bit block 64 for any keys; found=0
test_key: checking bit block 96 for any keys; found=1
test_key: checking bit block 128 for any keys; found=1
test_key: checking bit block 160 for any keys; found=1
test_key: checking bit block 192 for any keys; found=1
test_key: checking bit block 224 for any keys; found=1
ID_INPUT_KEY=1
Unload module index
Unloaded link configuration context.
- $ udevadm test-builtin input_id /devices/sound-9302.42/sound/card0/input3/
+
+ $ udevadm test-builtin input_id /devices/virtual/input/input1/
calling: test-builtin
=== trie on-disk ===
tool version: 219
file size: 6711498 bytes
header size 80 bytes
strings 1721914 bytes
nodes 4989504 bytes
Load module index
Network interface NamePolicy= disabled on kernel command line, ignoring.
timestamp of '/etc/systemd/network' changed
timestamp of '/usr/lib/systemd/network' changed
Parsed configuration file /lib/systemd/network/99-default.link
Parsed configuration file /etc/systemd/network/00-rmnet-kernel.link
Created link configuration context.
ID_INPUT=1
capabilities/ev raw kernel attribute: 3
capabilities/ev decoded bit map:
- bit 0: 00000003
- capabilities/abs raw kernel attribute: 0
- capabilities/abs decoded bit map:
- capabilities/rel raw kernel attribute: 0
- capabilities/rel decoded bit map:
- capabilities/key raw kernel attribute: 7a 4 0 0 0 c0000 0 0 0
- capabilities/key decoded bit map:
- bit 0: 00000000
- bit 32: 00000000
- bit 64: 00000000
- bit 96: 000C0000
- bit 128: 00000000
- bit 160: 00000000
- bit 192: 00000000
- bit 224: 00000004
- bit 256: 0000007A
- properties raw kernel attribute: 0
- properties decoded bit map:
+ bit 0: 00000003
+ capabilities/abs raw kernel attribute: 0
+ capabilities/abs decoded bit map:
+ capabilities/rel raw kernel attribute: 0
+ capabilities/rel decoded bit map:
+ capabilities/key raw kernel attribute: 100000 0 0 0
+ capabilities/key decoded bit map:
+ bit 0: 00000000
+ bit 32: 00000000
+ bit 64: 00000000
+ bit 96: 00100000
+ properties raw kernel attribute: 10
+ properties decoded bit map:
+ bit 0: 00000010
test_key: checking bit block 0 for any keys; found=0
test_key: checking bit block 32 for any keys; found=0
test_key: checking bit block 64 for any keys; found=0
test_key: checking bit block 96 for any keys; found=1
test_key: checking bit block 128 for any keys; found=1
test_key: checking bit block 160 for any keys; found=1
test_key: checking bit block 192 for any keys; found=1
test_key: checking bit block 224 for any keys; found=1
ID_INPUT_KEY=1
Unload module index
Unloaded link configuration context.
+ $ udevadm test-builtin input_id /devices/sound-9302.42/sound/card0/input3/
+ calling: test-builtin
+ === trie on-disk ===
+ tool version: 219
+ file size: 6711498 bytes
+ header size 80 bytes
+ strings 1721914 bytes
+ nodes 4989504 bytes
+ Load module index
+ Network interface NamePolicy= disabled on kernel command line, ignoring.
+ timestamp of '/etc/systemd/network' changed
+ timestamp of '/usr/lib/systemd/network' changed
+ Parsed configuration file /lib/systemd/network/99-default.link
+ Parsed configuration file /etc/systemd/network/00-rmnet-kernel.link
+ Created link configuration context.
+ ID_INPUT=1
+ capabilities/ev raw kernel attribute: 3
+ capabilities/ev decoded bit map:
+ bit 0: 00000003
+ capabilities/abs raw kernel attribute: 0
+ capabilities/abs decoded bit map:
+ capabilities/rel raw kernel attribute: 0
+ capabilities/rel decoded bit map:
+ capabilities/key raw kernel attribute: 7a 4 0 0 0 c0000 0 0 0
+ capabilities/key decoded bit map:
+ bit 0: 00000000
+ bit 32: 00000000
+ bit 64: 00000000
+ bit 96: 000C0000
+ bit 128: 00000000
+ bit 160: 00000000
+ bit 192: 00000000
+ bit 224: 00000004
+ bit 256: 0000007A
+ properties raw kernel attribute: 0
+ properties decoded bit map:
+ test_key: checking bit block 0 for any keys; found=0
+ test_key: checking bit block 32 for any keys; found=0
+ test_key: checking bit block 64 for any keys; found=0
+ test_key: checking bit block 96 for any keys; found=1
+ test_key: checking bit block 128 for any keys; found=1
+ test_key: checking bit block 160 for any keys; found=1
+ test_key: checking bit block 192 for any keys; found=1
+ test_key: checking bit block 224 for any keys; found=1
+ ID_INPUT_KEY=1
+ Unload module index
+ Unloaded link configuration context.
+
$ udevadm test-builtin input_id /devices/sound-9302.42/sound/card0/input4/
calling: test-builtin
=== trie on-disk ===
tool version: 219
file size: 6711498 bytes
header size 80 bytes
strings 1721914 bytes
nodes 4989504 bytes
Load module index
Network interface NamePolicy= disabled on kernel command line, ignoring.
timestamp of '/etc/systemd/network' changed
timestamp of '/usr/lib/systemd/network' changed
Parsed configuration file /lib/systemd/network/99-default.link
Parsed configuration file /etc/systemd/network/00-rmnet-kernel.link
Created link configuration context.
ID_INPUT=1
capabilities/ev raw kernel attribute: 21
capabilities/ev decoded bit map:
- bit 0: 00000021
+ bit 0: 00000021
capabilities/abs raw kernel attribute: 0
capabilities/abs decoded bit map:
capabilities/rel raw kernel attribute: 0
capabilities/rel decoded bit map:
capabilities/key raw kernel attribute: 0
capabilities/key decoded bit map:
properties raw kernel attribute: 0
properties decoded bit map:
test_key: no EV_KEY capability
Unload module index
Unloaded link configuration context.
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https://bugs.launchpad.net/bugs/1530384
Title:
Touchscreen stop working on LG L90 Dual
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https://bugs.launchpad.net/canonical-devices-system-image/+bug/1530384/+subscriptions
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