I confirmed that 2.6.32-22.36 detects my touchpad as AlpsPS/2 ALPS
GlidePoint and I see Touchpad tab in Preferences -> Mouse. Contrarily,
2.6.32-23.37 detects it as ImPS/2 Generic Wheel Mouse and I don't see
Touchpad tab.
Changelog of 2.6.32-23.37 says:
* Revert "(pre-stable): input: ALPS - Add signature for HP Pavilion dm3
laptops"
- LP: #550625
diff from 2.6.32-22.33 to 2.6.32-23.37 includes:
diff -u linux-2.6.32/drivers/input/mouse/alps.c
linux-2.6.32/drivers/input/mouse/alps.c
--- linux-2.6.32/drivers/input/mouse/alps.c
+++ linux-2.6.32/drivers/input/mouse/alps.c
@@ -64,7 +64,6 @@
{ { 0x73, 0x02, 0x50 }, 0xcf, 0xcf, ALPS_FW_BK_1 }, /*
Dell Vostro 1400 */
{ { 0x52, 0x01, 0x14 }, 0xff, 0xff,
ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED }, /*
Toshiba Tecra A11-11L */
- { { 0x73, 0x02, 0x64 }, 0xf8, 0xf8, 0 }, /* HP
Pavilion dm3 */
};
This revert might affect PCs other than HP Pavilion dm3 as well.
--
Alps touchpad detected as ImPS/2 Generic Wheel Mouse(in VAIO E series) after
the kernel upgrade
https://bugs.launchpad.net/bugs/565543
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