kernel-packages team mailing list archive

[Po-Hsu Lin <po-hsu.lin@xxxxxxxxxxxxx>]

TEST CASE:
1. Install 12.04.2, boot to desktop and run update (3.5.0-43) on 201303-13027
2. Install the proprietary video driver (fglrx-updates)
3. Reboot in battery mode (no AC connected)
4. Insert HDMI cable
5. execute 'cat /proc/asound/card0/codec0'
6. Kernel panic occurred, caps lock LED flashing, reboot
7. Install the deb file from comment #3
8. Repeat 3-5

VERIFICATION DONE

Expected result:
1. Kernel panic should happen on step 6
2. It won't happen again after the deb file was installed

Actual result:
Kernel panic occurred as expected, the patch works as expected

Thanks

** Tags added: 201303-13027 taipei-lab

** Changed in: linux (Ubuntu)
       Status: Incomplete => Confirmed

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https://bugs.launchpad.net/bugs/1212160

Title:
   'cat /proc/asound/card0/codec0' cause kernel panic (battery mode)

Status in HWE Next Project:
  Triaged
Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  Kernel panic if;
  1. boot up system with battery mode (no AC connected)
  2. insert HDMI cable
  3. execute 'cat /proc/asound/card0/codec0'

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