Bob reports that blacklisting the fan type label is not sufficient. See his message to me below. On Mon, Jan 25, 2021 at 3:38 PM Bob Hepple <bob.hepple@xxxxxxxxx> wrote: > > Hi Tom, > > Big nope this end with L502x in i8k_blacklist_fan_type_dmi_table: > > Jan 26 09:35:47 achar kernel: psmouse serio1: TouchPad at > isa0060/serio1/input0 lost synchronization, throwing 1 bytes> > > ... and lots of trackpad stall/stutters. > > Cheers > > > Bob > > > > On Tue, 26 Jan 2021 at 08:09, Bob Hepple <bob.hepple@xxxxxxxxx> wrote: > > > > ... compiling now ... results in a coupla hours > > > > Cheers > > > > > > Bob > > > > On Tue, 26 Jan 2021 at 04:05, Tom Hebb <tommyhebb@xxxxxxxxx> wrote: > > > > > > On Mon, Jan 25, 2021 at 2:05 AM Pali Rohár <pali@xxxxxxxxxx> wrote: > > > > > > > > On Saturday 23 January 2021 18:46:08 Thomas Hebb wrote: > > > > > It has been reported[0] that the Dell XPS 15 L502X exhibits similar > > > > > freezing behavior to the other systems[1] on this blacklist. The issue > > > > > was exposed by a prior change of mine to automatically load > > > > > dell_smm_hwmon on a wider set of XPS models. To fix the regression, add > > > > > this model to the blacklist. > > > > > > > > > > [0] https://bugzilla.kernel.org/show_bug.cgi?id=211081 > > > > > [1] https://bugzilla.kernel.org/show_bug.cgi?id=195751 > > > > > > > > > > Fixes: b8a13e5e8f37 ("hwmon: (dell-smm) Use one DMI match for all XPS models") > > > > > Cc: stable@xxxxxxxxxxxxxxx > > > > > Reported-by: Bob Hepple <bob.hepple@xxxxxxxxx> > > > > > Tested-by: Bob Hepple <bob.hepple@xxxxxxxxx> > > > > > Signed-off-by: Thomas Hebb <tommyhebb@xxxxxxxxx> > > > > > --- > > > > > > > > > > drivers/hwmon/dell-smm-hwmon.c | 7 +++++++ > > > > > 1 file changed, 7 insertions(+) > > > > > > > > > > diff --git a/drivers/hwmon/dell-smm-hwmon.c b/drivers/hwmon/dell-smm-hwmon.c > > > > > index ec448f5f2dc3..73b9db9e3aab 100644 > > > > > --- a/drivers/hwmon/dell-smm-hwmon.c > > > > > +++ b/drivers/hwmon/dell-smm-hwmon.c > > > > > @@ -1159,6 +1159,13 @@ static struct dmi_system_id i8k_blacklist_fan_support_dmi_table[] __initdata = { > > > > > DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "XPS13 9333"), > > > > > }, > > > > > }, > > > > > + { > > > > > + .ident = "Dell XPS 15 L502X", > > > > > + .matches = { > > > > > + DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), > > > > > + DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Dell System XPS L502X"), > > > > > > > > Hello! Are you sure that it is required to completely disable fan > > > > support? And not only access to fan type label for which is different > > > > blaclist i8k_blacklist_fan_type_dmi_table? > > > > > > This is a good question. We didn't try the other list. Bob is the one with the > > > affected system. Could you try moving the added block of code from > > > i8k_blacklist_fan_support_dmi_table a few lines up to > > > i8k_blacklist_fan_type_dmi_table, Bob, to see if the issue reappears or if it > > > remains fixed? > > > > > > > > > > > And have you reported this issue to Dell support? > > > > > > > > > + }, > > > > > + }, > > > > > { } > > > > > }; > > > > > > > > > > -- > > > > > 2.30.0 > > > > > > > > > > > (Apologies for the previous HTML copy of this reply, to those directly CCed.) > > > > > > -Tom
