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This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.
** Changed in: linux (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1501580
Title:
Workaround for dw_dmac causing random hang when booting
Status in HWE Next:
New
Status in linux package in Ubuntu:
Incomplete
Bug description:
On HP X360, we've found dw_dmac hangs system when booting with very
high fail rate (~80%). System can not turn power off when shutting
down either if dw_dmac is loaded.
The maintainer from Intel is proposing a patch to fix this issue, but
won't be available until 4.3 or 4.4, and there're users already hit
this problem[1], so we proposed a temporarily workaround to skip
probing in dw_dmac by returning -ENODEV directly if DMI_PRODUCT_NAME
matches HP X360 before the fix is ready.
[1]: https://bugzilla.kernel.org/show_bug.cgi?id=101271
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