I'm also affected by this bug on 20.04 with the HWE 5.13 kernel
(currently: 5.13.0-30-generic #33~20.04.1-Ubuntu SMP Mon Feb 7 14:25:10
UTC 2022 x86_64 x86_64 x86_64 GNU/Linux). My PCIe Thunderbolt card (ASUS
ThunderboltEX 4, Intel JHL8540 controller) only partially works: the USB
part works and
** Bug watch added: Linux Kernel Bug Tracker #214259
https://bugzilla.kernel.org/show_bug.cgi?id=214259
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https://bugs.launchpad.net/bugs/1860284
Title:
thinkpad
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** Also affects: linux via
https://bugzilla.kernel.org/show_bug.cgi?id=206459
Importance: Unknown
Status: Unknown
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There is now a working patch on the upstream bug
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Title:
thinkpad thunderbolt 3 dock gen2 with pci memory allocation errors on
Still no luck with 5.5.4
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Title:
thinkpad thunderbolt 3 dock gen2 with pci memory allocation errors on
Yoga C940 unless plugged
unfortunately, same results with BIOS AUCN54WW (manually installed,
since not offered by either lenovo system update nor windows update).
Same symptoms.
Same symptoms also on with kernel mainline 5.5.3
For reference, dock firmware is V3.1.66
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Please test latest BIOS AUCN54WW.
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Title:
thinkpad thunderbolt 3 dock gen2 with pci memory allocation errors on
Yoga C940 unless
Reported upstream on Bug:
https://bugzilla.kernel.org/show_bug.cgi?id=206459
** Bug watch added: Linux Kernel Bug Tracker #206459
https://bugzilla.kernel.org/show_bug.cgi?id=206459
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Still the same on 5.5.2
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Title:
thinkpad thunderbolt 3 dock gen2 with pci memory allocation errors on
Yoga C940 unless plugged in
With kernel mainline 5.5.1, it does get a little bit further, only BAR
14 and 0 fail to assign on the second try. See attached dmesg. But
symptoms are still identical: no peripherals work except for video.
Any way I can systematically search for a workaround using pci= kernel
parameters?
**
Please test latest mainline kernel:
https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.5/
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Title:
thinkpad thunderbolt 3 dock gen2
** Summary changed:
- thinkpad thunderbolt 3 dock gen2 does not work on Yoga C940 unless plugged in
before boot
+ thinkpad thunderbolt 3 dock gen2 with pci memory allocation errors on Yoga
C940 unless plugged in before boot
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