diff options
| author | Hans de Goede <hdegoede@redhat.com> | 2021-01-14 15:34:32 +0100 |
|---|---|---|
| committer | Hans de Goede <hdegoede@redhat.com> | 2021-01-18 19:42:23 +0100 |
| commit | 070222731be52d741e55d8967b1764482b81e54c (patch) | |
| tree | 832ef99725d2e7771bc859c6fcab2b5705450a70 /drivers | |
| parent | f419e5940f1d9892ea6f45acdaca572b9e73ff39 (diff) | |
| download | linux-070222731be52d741e55d8967b1764482b81e54c.tar.bz2 | |
platform/x86: intel-vbtn: Drop HP Stream x360 Convertible PC 11 from allow-list
THe HP Stream x360 Convertible PC 11 DSDT has the following VGBS function:
Method (VGBS, 0, Serialized)
{
If ((^^PCI0.LPCB.EC0.ROLS == Zero))
{
VBDS = Zero
}
Else
{
VBDS = Zero
}
Return (VBDS) /* \_SB_.VGBI.VBDS */
}
Which is obviously wrong, because it always returns 0 independent of the
2-in-1 being in laptop or tablet mode. This causes the intel-vbtn driver
to initially report SW_TABLET_MODE = 1 to userspace, which is known to
cause problems when the 2-in-1 is actually in laptop mode.
During earlier testing this turned out to not be a problem because the
2-in-1 would do a Notify(..., 0xCC) or Notify(..., 0xCD) soon after
the intel-vbtn driver loaded, correcting the SW_TABLET_MODE state.
Further testing however has shown that this Notify() soon after the
intel-vbtn driver loads, does not always happen. When the Notify
does not happen, then intel-vbtn reports SW_TABLET_MODE = 1 resulting in
a non-working touchpad.
IOW the tablet-mode reporting is not reliable on this device, so it
should be dropped from the allow-list, fixing the touchpad sometimes
not working.
Fixes: 8169bd3e6e19 ("platform/x86: intel-vbtn: Switch to an allow-list for SW_TABLET_MODE reporting")
Link: https://lore.kernel.org/r/20210114143432.31750-1-hdegoede@redhat.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/platform/x86/intel-vbtn.c | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/drivers/platform/x86/intel-vbtn.c b/drivers/platform/x86/intel-vbtn.c index 9bbdb26d4305..30a9062d2b4b 100644 --- a/drivers/platform/x86/intel-vbtn.c +++ b/drivers/platform/x86/intel-vbtn.c @@ -207,12 +207,6 @@ static const struct dmi_system_id dmi_switches_allow_list[] = { { .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), - DMI_MATCH(DMI_PRODUCT_NAME, "HP Stream x360 Convertible PC 11"), - }, - }, - { - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion 13 x360 PC"), }, }, |