This bug is missing log files that will aid in diagnosing the problem.
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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/1494593
Title:
Marvell's W8897 WLAN/BT combo card doesn't work from time to time
Status in HWE Next:
New
Status in linux package in Ubuntu:
Incomplete
Bug description:
On cold boot, the W8897 sometimes won't work. And even if it works,
the card would fail after reboot. Even more, sometimes it would
vanished from PCI bus.
There's a race between mwifiex_pcie and mwifiex_usb which causes this
issue. Currently as a workaround we can blacklist mwifiex_usb. Marvell
is still working on a solution.
PCI ID:
02:00.0 Ethernet controller [0200]: Marvell Technology Group Ltd. Device
[11ab:2b38]
USB ID:
Bus 001 Device 003: ID 1286:2045 Marvell Semiconductor, Inc.
And the info in dmesg:
[ 7.561183] mwifiex: rx work enabled, cpus 8
[ 8.726729] mwifiex: rx work enabled, cpus 8
[ 8.727110] usbcore: registered new interface driver mwifiex_usb
[ 8.796120] usb 1-6: info: FW download over, size 0 bytes
[ 8.796123] usb 1-6: info: mwifiex_fw_dpc: unregister device
[ 9.361595] mwifiex_pcie 0000:02:00.0: info: FW download over, size 759128
bytes
[ 19.760514] mwifiex_pcie 0000:02:00.0: PCI-E is not the winner
<0xffffffff,1>, exit dnld
[ 19.760519] mwifiex_pcie 0000:02:00.0: FW failed to be active in time
[ 19.760522] mwifiex_pcie 0000:02:00.0: info: mwifiex_fw_dpc: unregister
device
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