This bug was fixed in the package linux-oem-6.0 - 6.0.0-1009.9
---------------
linux-oem-6.0 (6.0.0-1009.9) jammy; urgency=medium
* jammy/linux-oem-6.0: 6.0.0-1009.9 -proposed tracker (LP: #1999041)
* Support Intel IPU6 MIPI camera (LP: #1987595)
- debian/dkms-versions -- manual update for IPU6/IVSC.
* Gnome doesn't run smooth when performing normal usage with RPL-P CPU
(LP: #1998419)
- drm/i915/rpl-p: Add stepping info
* Fix iosm: WWAN cannot build the connection (DW5823e) (LP: #1998115)
- net: wwan: iosm: fix driver not working with INTEL_IOMMU disabled
* Fix System cannot detect bluetooth after running suspend stress test
(LP: #1998727)
- wifi: rtw88: 8821c: enable BT device recovery mechanism
* Rear Audio port sometimes has no audio output after reboot(Cirrus Logic)
(LP: #1998905)
- SAUCE: ALSA: hda/cirrus: Add extra 10 ms delay to allow PLL settle and
lock.
-- Timo Aaltonen <timo.aalto...@canonical.com> Wed, 07 Dec 2022
20:00:55 +0200
** Changed in: linux-oem-6.0 (Ubuntu Jammy)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1998115
Title:
Fix iosm: WWAN cannot build the connection (DW5823e)
Status in HWE Next:
New
Status in linux package in Ubuntu:
Invalid
Status in linux-oem-6.0 package in Ubuntu:
Invalid
Status in linux source package in Jammy:
In Progress
Status in linux-oem-6.0 source package in Jammy:
Fix Released
Status in linux source package in Kinetic:
In Progress
Status in linux-oem-6.0 source package in Kinetic:
Invalid
Bug description:
[Impact]
WWAN(DW5823e) can't build the connection successfully.
[Fix]
With INTEL_IOMMU disable config or by forcing intel_iommu=off from
grub some of the features of IOSM driver like browsing, flashing &
coredump collection is not working.
When driver calls DMA API - dma_map_single() for tx transfers. It is
resulting in dma mapping error.
Set the device DMA addressing capabilities using dma_set_mask() and
remove the INTEL_IOMMU dependency in kconfig so that driver follows
the platform config either INTEL_IOMMU enable or disable.
Because the generic jammy(5.15) doesn't contain NET_DEVLINK and RELAY
CONFIGs yet on iosm module, the single patch is necessary for Jammy.
[Test Case]
1. boot up with kernel applied the FIX.
2. check the status of wwan by "mmcli -m 0"
Status| unlock retries: sim-pin (3)
| state: ^[32mconnected^[0m
| power state: on
| access tech: lte
| signal quality: 45% (recent)
----------------------------------
3GPP | imei: ######
| enabled locks: sim, fixed-dialing
| operator id: 46692
| operator name: Chunghwa Telecom
| registration: home
| packet service state: attached
| pco:
| 0: (complete)
[Where problems could occur]
remove the dependency for intel_iommu, iosm would fit better on other
platforms not only Intel.
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