This bug was fixed in the package linux-oem-osp1 - 5.0.0-1052.57
---------------
linux-oem-osp1 (5.0.0-1052.57) bionic; urgency=medium
* bionic/linux-oem-osp1: 5.0.0-1052.57 -proposed tracker (LP:
#1876676)
* Make Dell WD19 dock more reliable after suspend (LP: #1868217)
- xhci: Ensure link state is U3 after setting USB_SS_PORT_LS_U3
- xhci: Wait until link state trainsits to U0 after setting
USB_SS_PORT_LS_U0
- xhci: Finetune host initiated USB3 rootport link suspend and resume
* Packaging resync (LP: #1786013)
- [Packaging] add libcap-dev dependency
-- Timo Aaltonen <timo.aalto...@canonical.com> Mon, 04 May 2020
11:56:26 +0300
** Changed in: linux-oem-osp1 (Ubuntu Bionic)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1868217
Title:
Make Dell WD19 dock more reliable after suspend
Status in HWE Next:
New
Status in linux package in Ubuntu:
Fix Released
Status in linux-oem-osp1 package in Ubuntu:
New
Status in linux source package in Bionic:
Won't Fix
Status in linux-oem-osp1 source package in Bionic:
Fix Released
Status in linux source package in Eoan:
Fix Released
Status in linux-oem-osp1 source package in Eoan:
Won't Fix
Status in linux source package in Focal:
Fix Released
Status in linux-oem-osp1 source package in Focal:
Won't Fix
Bug description:
[Impact]
When Dell WD19 dock connects multiple USB3 storage devices, the USB Hub
used internally may stop working after suspend.
[Fix]
Disable LPM on the Realtek USB Hub, and let xHCI controller make sure
the link state transition is completed.
[Test]
After applying the patches, the Dell WD19 works reliably after thousand
times for suspend/resume cycle.
[Regression Potential]
Low. This replaces the currently "msleep" way with more robust
mechanism. I also test other systems and nothing breaks.
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