Lenovo E47G won't sleep in DC mode

[Jesse Sung]

On a Lenovo E47G in DC mode, although the "put computer into sleep after idle for certain time" is set, some invalid key event may be generated time to time to prevent the system go into sleep mode after it's left idle for a long time.

[Jesse Sung (wenchien)]

From: Ike Panhc <email address hidden>

BugLink: https://bugs.launchpad.net/bugs/1029834

Otherwise will generate KEY_UNKNOWN on un-listed vpc event,
which means nothing and is hard for user to report the detail
of the event.

Signed-off-by: Ike Panhc <email address hidden>
Signed-off-by: Matthew Garrett <email address hidden>
(cherry picked from commit 20a769c1c6671d3b8d18a7358eff15e3dd29e94b)
Signed-off-by: Wen-chien Jesse Sung <email address hidden>
---
 drivers/platform/x86/ideapad-laptop.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c
index a36addf..a1d1415 100644
--- a/drivers/platform/x86/ideapad-laptop.c
+++ b/drivers/platform/x86/ideapad-laptop.c
@@ -785,6 +785,10 @@ static void ideapad_acpi_notify(struct acpi_device *adevice, u32 event)
    case 9:
     ideapad_sync_rfk_state(priv);
     break;
+ case 13:
+ case 6:
+ ideapad_input_report(priv, vpc_bit);
+ break;
    case 4:
     ideapad_backlight_notify_brightness(priv);
     break;
@@ -795,7 +799,7 @@ static void ideapad_acpi_notify(struct acpi_device *adevice, u32 event)
     ideapad_backlight_notify_power(priv);
     break;
    default:
- ideapad_input_report(priv, vpc_bit);
+ pr_info("Unknown event: %lu\n", vpc_bit);
    }
   }
  }
--
1.7.9.5

[Herton R. Krzesinski (herton)]

--
[]'s
Herton

[Luis Henriques (henrix)]

This bug is awaiting verification that the kernel for Precise in -proposed solves the problem (3.2.0-30.47). Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-precise' to 'verification-done-precise'.

If verification is not done by one week from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

[Luis Henriques (henrix)]

Jesse, could you please test the -proposed kernel, as per comment #3? Thanks.

[Jesse Sung (wenchien)]

Luis,
Will do the test on next Monday. Thank you. :)

[Ike Panhc (ikepanhc)]

With precise-29.46, system wont go into suspend on battery power. With precise-30.48, system suspend on battery power after minutes of idle.

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 3.2.0-30.48

---------------
linux (3.2.0-30.48) precise-proposed; urgency=low

  [Luis Henriques]

  * Release Tracking Bug
    - LP: #1041217

  [ Upstream Kernel Changes ]

  * mutex: Place lock in contended state after fastpath_lock failure
    - LP: #1041114

linux (3.2.0-30.47) precise-proposed; urgency=low

  [Luis Henriques]

  * Release Tracking Bug
    - LP: #1036581

  [ Andy Whitcroft ]

  * add support for generating binary device trees and install them in
    /lib/firmware
    - LP: #1030600
  * [Config] add dtb_file configuration for highbank
    - LP: #1030600

  [ Chris Van Hoof ]

  * SAUCE: dell-laptop: additional rfkill blacklist Dell XPS 13
    - LP: #1030957
  * [Config] Add cifs support to the nfs-modules list
    - LP: #1031398

  [ Daniel P. Berrange ]

  * SAUCE: (drop after 3.6) Forbid invocation of kexec_load() outside
    initial PID namespace
    - LP: #1034125

  [ Dann Frazier ]

  * [Config] Compile the rtc-pl031 driver builtin on the highbank kernel
    flavour
    - LP: #1035110

  [ Douglas Bagnall ]

  * SAUCE: Unlock the rc_dev lock when the raw device is missing
    - LP: #1015836

  [ Rob Herring ]

  * SAUCE: ARM: highbank: add soft power and reset key event handling
    - LP: #1033853
  * SAUCE: ARM: highbank: use writel_relaxed variant for pwr requests
    - LP: #1033853
  * SAUCE: ahci: un-staticize ahci_dev_classify
    - LP: #1033853
  * SAUCE: ahci_platform: add custom hard reset for Calxeda ahci ctrlr
    - LP: #1033853

  [ Stefan Bader ]

  * (pre-stable) KVM: VMX: Set CPU_BASED_RDPMC_EXITING for nested
    - LP: #1031090

  [ Tim Gardner ]

  * [Config] updateconfigs

  [ Upstream Kernel Changes ]

  * ideapad: generate valid key event only
    - LP: #1029834
  * mm: reduce the amount of work done when updating min_free_kbytes
    - LP: #1032640
  * mm: compaction: allow compaction to isolate dirty pages
    - LP: #1032640
  * mm: compaction: determine if dirty pages can be migrated without
    blocking within ->migratepage
    - LP: #1032640
  * mm: page allocator: do not call direct reclaim for THP allocations
    while compaction is deferred
    - LP: #1032640
  * mm: compaction: make isolate_lru_page() filter-aware again
    - LP: #1032640
  * mm: compaction: introduce sync-light migration for use by compaction
    - LP: #1032640
  * mm: vmscan: when reclaiming for compaction, ensure there are sufficient
    free pages available
    - LP: #1032640
  * mm: vmscan: do not OOM if aborting reclaim to start compaction
    - LP: #1032640
  * mm: vmscan: check if reclaim should really abort even if
    compaction_ready() is true for one zone
    - LP: #1032640
  * vmscan: promote shared file mapped pages
    - LP: #1032640
  * vmscan: activate executable pages after first usage
    - LP: #1032640
  * mm/vmscan.c: consider swap space when deciding whether to continue
    reclaim
    - LP: #1032640
  * mm: test PageSwapBacked in lumpy reclaim
    - LP: #1032640
  * mm: vmscan: convert global reclaim to per-memcg LRU lists
    - LP: #1032640
  * cpuset: mm: reduce large amounts of memory barrier related damage v3
    - LP: #1032640
  * mm/hugetlb: fix warni...

[Chris Halse Rogers (raof)]

The verification of this Stable Release Update has completed successfully and the package has now been released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regresssions.