kernel-packages team mailing list archive

[Andy Whitcroft <apw@xxxxxxxxxxxxx>]

This has now hit mainline as the commit below:

  commit 16b036af31e1456cb69243a5a0c9ef801ecd1f17
  Author: Michel Dänzer <michel.daenzer@xxxxxxx>
  Date:   Mon Jan 19 17:53:20 2015 +0900

    PCI: Fix infinite loop with ROM image of size 0

As this is CC: stable, we should expect this fix to hit our trees
naturally as a result via upstream stable.  Marking this up to that
effect.

** Description changed:

  I have a VGA controller Advanced Micro Devices, Inc. [AMD/ATI] Cape Verde XT [Radeon HD 7770/8760 / R7 250X].
  When I boot from the Utopic DVD I get to the language menu and I can select try ubuntu without installing, but after a few sencods I get "BUG: soft lockup - CPU#0 stuck for 22s!'" and the message just repeats every 22 secods forever.
  
  I tried setting nomodeset using the F6 menu, but I got exactly the same
  result.
  
  This is Ubuntu 14.10 64 bits which basically seems unable to boot with
  that hardware.
  
  The experience was the same with 14.04, but I thought 14.10 would be
  better. In 14.04 disabling the video card and booting off the integrated
  graphics let me set nomodeset in /etc/default/grub and I was able boot
  with the R7 250X with the VESA driver. Installed Catalyst afterwards.
+ 
+ 
+ ===
+ break-fix: - 16b036af31e1456cb69243a5a0c9ef801ecd1f17

** Tags added: kernel-bug-break-fix

** Also affects: linux (Ubuntu Trusty)
   Importance: Undecided
       Status: New

** Also affects: linux (Ubuntu Vivid)
   Importance: Medium
       Status: Confirmed

** Also affects: linux (Ubuntu Utopic)
   Importance: Undecided
       Status: New

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

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

** Changed in: linux (Ubuntu Utopic)
   Importance: Undecided => Medium

** Changed in: linux (Ubuntu Trusty)
   Importance: Undecided => Medium

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1386973

Title:
  Ubuntu 14.10 soft lockup with ATI Radeon R7 250 X

Status in linux package in Ubuntu:
  Confirmed
Status in linux source package in Trusty:
  Confirmed
Status in linux source package in Utopic:
  Confirmed
Status in linux source package in Vivid:
  Confirmed

Bug description:
  I have a VGA controller Advanced Micro Devices, Inc. [AMD/ATI] Cape Verde XT [Radeon HD 7770/8760 / R7 250X].
  When I boot from the Utopic DVD I get to the language menu and I can select try ubuntu without installing, but after a few sencods I get "BUG: soft lockup - CPU#0 stuck for 22s!'" and the message just repeats every 22 secods forever.

  I tried setting nomodeset using the F6 menu, but I got exactly the
  same result.

  This is Ubuntu 14.10 64 bits which basically seems unable to boot with
  that hardware.

  The experience was the same with 14.04, but I thought 14.10 would be
  better. In 14.04 disabling the video card and booting off the
  integrated graphics let me set nomodeset in /etc/default/grub and I
  was able boot with the R7 250X with the VESA driver. Installed
  Catalyst afterwards.

  
  ===
  break-fix: - 16b036af31e1456cb69243a5a0c9ef801ecd1f17

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1386973/+subscriptions