Lenovo E47G won't sleep in DC mode

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

--
[]'s
Herton

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!

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

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

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.

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...

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.