Ubuntu 14.10 soft lockup with ATI Radeon R7 250 X
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Fix Released
|
Medium
|
Unassigned | ||
Trusty |
Fix Released
|
Medium
|
Unassigned | ||
Utopic |
Fix Released
|
Medium
|
Unassigned | ||
Vivid |
Fix Released
|
Medium
|
Unassigned |
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: - 16b036af31e1456
tags: | added: patch |
affects: | linux-lts-trusty (Ubuntu) → linux (Ubuntu) |
Changed in linux (Ubuntu): | |
importance: | Undecided → Medium |
description: | updated |
tags: | added: kernel-bug-break-fix |
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 |
Changed in linux (Ubuntu Vivid): | |
status: | Confirmed → Fix Committed |
Changed in linux (Ubuntu Precise): | |
importance: | Undecided → High |
Changed in linux (Ubuntu Trusty): | |
importance: | Medium → High |
Changed in linux (Ubuntu Precise): | |
importance: | High → Medium |
Changed in linux (Ubuntu Trusty): | |
importance: | High → Medium |
no longer affects: | linux (Ubuntu Precise) |
Changed in linux (Ubuntu Vivid): | |
status: | Fix Committed → Fix Released |
Changed in linux (Ubuntu Utopic): | |
status: | Confirmed → Fix Committed |
Changed in linux (Ubuntu Trusty): | |
status: | Confirmed → Fix Committed |
Changed in linux (Ubuntu Utopic): | |
status: | Fix Committed → Fix Released |
Changed in linux (Ubuntu Trusty): | |
status: | Fix Committed → Fix Released |
tags: | removed: kernel-bug-break-fix |
I added the kernel parameter softlockup_panic=1 and got a stacktrace.