http://bugzilla.kernel.org/show_bug.cgi?id=14398
Summary: Blank display on resume from Suspend-to-RAM (HP
ZV5400t CTO laptop)
Product: ACPI
Version: 2.5
Kernel Version: 2.6.31.1
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Power-Sleep-Wake
AssignedTo: [email protected]
ReportedBy: [email protected]
Regression: No
Created an attachment (id=23372)
--> (http://bugzilla.kernel.org/attachment.cgi?id=23372)
Output of lspci -vv
I've been trying for sometime to get suspend-to-ram to work but have had no
success over a range of kernels going all the way back to the 2.4.x series.
FWIW, suspend-to-ram works on windows xp.
I'm attatching the following that may help shed some light on this.
1) dmesg *after* Test#2
2) Output of lspci -vv
3) Output of acpidump
Current kernel: 2.6.31.1
Last working kernel: none
Distro: slackware 13.0
Laptop: HP ZV5400T CTO (HP Pavilion laptop)
Suspend-to-ram Tests
Test #1
Suspend:
-- Exit X-windows
-- go to single user (telinit 1), verified no acpid running
-- echo mem > /sys/power/state
Result:
-- System goes into suspend state.
Indications: power button flashing, power LED flashing, similar to standby
in windows
Wakeup:
-- Push flashing power button
-- Fan turns on
-- Hard drive spins up
-- LCD display is blank and remains blank
-- CAPS Lock light does not come on when pushed
Test #2
To suspend:
-- Exit X-windows
-- go to single user (telinit 1) verified no acpid running
-- echo core > /sys/power/pm_test
-- echo mem > /sys/power/state
Result:
System goes into suspend state
Wakeup:
Returns after 5-10 secs
Display works, everything appears to work normally.
Other observations:
Per the hint in the logs, adding acpi.gts=1 makes no difference
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