http://bugzilla.kernel.org/show_bug.cgi?id=7277
Summary: PS2 Touchpad (Synaptics) disappears after wake-up from
S3 suspend
Kernel Version: 2.6.18
Status: NEW
Severity: normal
Owner: [EMAIL PROTECTED]
Submitter: [EMAIL PROTECTED]
Most recent kernel where this bug did not occur: n/a
Distribution: Ubuntu 6.06
Hardware Environment: Gateway MX6121 laptop with Intel ICH6 chipset
Software Environment: -
Problem Description: When laptop wakes up from S3 suspend (suspend to RAM),
the Synaptics touchpad does not work anymore. Other than that, system works
fine. "dmesg" reports:
[ 516.968000] pnp: Device 00:07 does not support activation.
[ 516.968000] pnp: Device 00:08 does not support activation.
Device 00:08 is the Synaptics touchpad. The file /sys/bus/pnp/devices/00:08/id
reads:
SYN0402
SYN0400
SYN0002
PNP0f13
The file /sys/bus/pnp/devices/00:08/resources reads:
state = active
irq 12
Neither changes as a result of the sleep/wakeup.
The clearest change that I see is in /sys/devices/platform/i8042/serio0, which
corresponds to the touchpad (its "description" file reads "i8042 Aux Port").
Before suspend, it contains the following files:
bind_mode
bus -> ../../../../bus/serio
description
driver -> ../../../../bus/serio/drivers/psmouse
drvctl
id
input:event1 -> ../../../../class/input/input1/event1
input:input1 -> ../../../../class/input/input1
input:mouse0 -> ../../../../class/input/input1/mouse0
modalias
power
protocol
rate
resetafter
resolution
resync_time
subsystem -> ../../../../bus/serio
uevent
After resume, the files "input:event1", "input:input1", "input:mouse0",
"protocol", "rate", "resetafter", "resolution", and "resynctime" have
disappeared.
Steps to reproduce:
(1) rmmod acpi_cpufreq, if loaded. (With acpi_cpufreq loaded, the system refuses
to sleep. This seems to be an unrelated problem.)
(2) echo -n "mem" > /sys/power/state
[The computer sleeps and its power light blinks.]
(3) Press the power button.
[The computer wakes up.]
Any advice on how to further trace this problem down would be very much
appreciated. Note that this is not the same bug as #1279, which was fixed
earlier in the 2.6.x kernel series.
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