Samsung Chromebook Wifi Stops after some time

[dabacus]

I have had this problem ever since installing archlinux on this chromebook and it only happens when I'm booting arch, but after a certain amount of time which can be from a few minutes to a few hours, the wifi card (mlan0) just seems to disappear. ifconfig -a doesnt show it and rfkill doesnt show it. Then I reboot and its back and works again for another hour or so.

below is a the last bit of dmesg when the wifi got messed up. If anyone can help me understand what that means, that would be much appreciated.

```
[ 43.659236] cyapa 1-0067: failed to read report data, (-6)
[ 52.971923] cyapa 1-0067: failed to read report data, (-6)
[ 74.709958] mwifiex_sdio mmc2:0001:1: CMD_RESP: cmd 0x23f error, result=0x2
[ 98.938257] cyapa 1-0067: failed to read report data, (-6)
[ 105.022595] cyapa 1-0067: failed to read report data, (-6)
[ 113.501685] cyapa 1-0067: failed to read report data, (-6)
[ 121.834336] cyapa 1-0067: failed to read report data, (-6)
[ 130.142983] cyapa 1-0067: failed to read report data, (-6)
[ 172.989329] cyapa 1-0067: failed to read report data, (-6)
[ 194.427200] cyapa 1-0067: failed to read report data, (-6)
[ 208.956153] cyapa 1-0067: failed to read report data, (-6)
[ 242.099296] mwifiex_sdio mmc2:0001:1: mwifiex_cmd_timeout_func: Timeout cmd id = 0x7f, act = 0x0
[ 242.099315] mwifiex_sdio mmc2:0001:1: num_data_h2c_failure = 0
[ 242.099327] mwifiex_sdio mmc2:0001:1: num_cmd_h2c_failure = 0
[ 242.099341] mwifiex_sdio mmc2:0001:1: is_cmd_timedout = 1
[ 242.099352] mwifiex_sdio mmc2:0001:1: num_tx_timeout = 0
[ 242.099363] mwifiex_sdio mmc2:0001:1: last_cmd_index = 0
[ 242.099375] mwifiex_sdio mmc2:0001:1: last_cmd_id: 7f 00 7f 00 16 00 a4 00 ce 00
[ 242.099391] mwifiex_sdio mmc2:0001:1: last_cmd_act: 00 00 00 00 00 00 00 00 00 a0
[ 242.099402] mwifiex_sdio mmc2:0001:1: last_cmd_resp_index = 4
[ 242.099415] mwifiex_sdio mmc2:0001:1: last_cmd_resp_id: 75 80 7f 80 16 80 a4 80 ce 80
[ 242.099427] mwifiex_sdio mmc2:0001:1: last_event_index = 3
[ 242.099438] mwifiex_sdio mmc2:0001:1: last_event: 1c 00 1c 00 0b 00 19 00 1c 00
[ 242.099447] mwifiex_sdio mmc2:0001:1: data_sent=1 cmd_sent=0
[ 242.099459] mwifiex_sdio mmc2:0001:1: ps_mode=1 ps_state=0
[ 242.100232] mwifiex_sdio mmc2:0001:1: ===mwifiex driverinfo dump start===
[ 242.100244] mwifiex_sdio mmc2:0001:1: info: MWIFIEX VERSION: mwifiex 1.0 (14.68.29.p59)
[ 242.100261] mwifiex_sdio mmc2:0001:1: SDIO register dump start
[ 242.100387] mwifiex_sdio mmc2:0001:1: getting data rate error
[ 242.101109] mwifiex_sdio mmc2:0001:1: PREP_CMD: FW is in bad state
[ 242.101119] mwifiex_sdio mmc2:0001:1: failed to get signal information
[ 242.101588] mwifiex_sdio mmc2:0001:1: PREP_CMD: FW is in bad state
[ 242.101597] mwifiex_sdio mmc2:0001:1: failed to get signal information
[ 242.102223] mwifiex_sdio mmc2:0001:1: PREP_CMD: FW is in bad state
[ 242.102232] mwifiex_sdio mmc2:0001:1: failed to get signal information
[ 242.102465] mwifiex_sdio mmc2:0001:1: PREP_CMD: FW is in bad state
[ 242.102473] mwifiex_sdio mmc2:0001:1: failed to get signal information
[ 242.102638] mwifiex_sdio mmc2:0001:1: PREP_CMD: FW is in bad state
[ 242.102645] mwifiex_sdio mmc2:0001:1: failed to get signal information
[ 242.102794] mwifiex_sdio mmc2:0001:1: PREP_CMD: FW is in bad state
[ 242.102801] mwifiex_sdio mmc2:0001:1: failed to get signal information
[ 242.102989] mwifiex_sdio mmc2:0001:1: PREP_CMD: FW is in bad state
[ 242.102996] mwifiex_sdio mmc2:0001:1: failed to get signal information
[ 242.103146] mwifiex_sdio mmc2:0001:1: PREP_CMD: FW is in bad state
[ 242.103154] mwifiex_sdio mmc2:0001:1: failed to get signal information
[ 242.103350] mwifiex_sdio mmc2:0001:1: PREP_CMD: FW is in bad state
[ 242.103358] mwifiex_sdio mmc2:0001:1: failed to get signal information
[ 242.103503] mwifiex_sdio mmc2:0001:1: PREP_CMD: FW is in bad state
[ 242.103510] mwifiex_sdio mmc2:0001:1: failed to get signal information
[ 242.103644] mwifiex_sdio mmc2:0001:1: PREP_CMD: FW is in bad state
[ 242.103651] mwifiex_sdio mmc2:0001:1: failed to get signal information
[ 242.103787] mwifiex_sdio mmc2:0001:1: PREP_CMD: FW is in bad state
[ 242.103794] mwifiex_sdio mmc2:0001:1: failed to get signal information
[ 242.103940] mwifiex_sdio mmc2:0001:1: PREP_CMD: FW is in bad state
[ 242.103947] mwifiex_sdio mmc2:0001:1: failed to get signal information
[ 242.104088] mwifiex_sdio mmc2:0001:1: PREP_CMD: FW is in bad state
[ 242.104095] mwifiex_sdio mmc2:0001:1: failed to get signal information
[ 242.104228] mwifiex_sdio mmc2:0001:1: PREP_CMD: FW is in bad state
[ 242.104234] mwifiex_sdio mmc2:0001:1: failed to get signal information
[ 242.104734] mwifiex_sdio mmc2:0001:1: PREP_CMD: FW is in bad state
[ 242.104743] mwifiex_sdio mmc2:0001:1: failed to get signal information
[ 242.104928] mwifiex_sdio mmc2:0001:1: Ignore scan. Card removed or firmware in bad state
[ 242.104936] mwifiex_sdio mmc2:0001:1: scan failed: -14
[ 242.107454] mwifiex_sdio mmc2:0001:1: SDIO Func0 (0x0-0x9): 43 03 06 06 07 00 00 02 03 00
[ 242.107935] mwifiex_sdio mmc2:0001:1: SDIO Func1 (0x0-0x9): 02 3f 03 00 00 00 00 00 0a 00
[ 242.110941] mwifiex_sdio mmc2:0001:1: SDIO Func1: (0x28) 00 (0x30) 08 (0x34) 07 (0x38) 13 (0x3c) 00
[ 242.111984] mwifiex_sdio mmc2:0001:1: SDIO Func1 (0x60-0x6a): dc fe 00 05 00 00 cb 00 00 00 20
[ 242.266723] mwifiex_sdio mmc2:0001:1: SDIO Func1 (0x60-0x6a): dc fe 00 05 00 00 cb 00 00 00 20
[ 242.266741] mwifiex_sdio mmc2:0001:1: SDIO register dump end
[ 242.266801] mwifiex_sdio mmc2:0001:1: ===mwifiex driverinfo dump end===
[ 242.266810] mwifiex_sdio mmc2:0001:1: == mwifiex dump information to /sys/class/devcoredump start
[ 242.268428] mwifiex_sdio mmc2:0001:1: == mwifiex dump information to /sys/class/devcoredump end
[ 242.268442] mwifiex_sdio mmc2:0001:1: PREP_CMD: FW is in bad state
[ 242.268663] mwifiex_sdio mmc2:0001:1: info: shutdown mwifiex...
[ 242.268868] mwifiex_sdio mmc2:0001:1: PREP_CMD: card is removed
[ 242.273708] mwifiex_sdio mmc2:0001:1: PREP_CMD: card is removed
[ 242.273721] mwifiex_sdio mmc2:0001:1: PREP_CMD: card is removed
[ 242.273736] mwifiex_sdio mmc2:0001:1: PREP_CMD: card is removed
[ 242.287703] mwifiex_sdio mmc2:0001:1: PREP_CMD: card is removed
[ 242.287717] mwifiex_sdio mmc2:0001:1: deleting the crypto keys
[ 242.287727] mwifiex_sdio mmc2:0001:1: PREP_CMD: card is removed
[ 242.287733] mwifiex_sdio mmc2:0001:1: deleting the crypto keys
[ 242.287742] mwifiex_sdio mmc2:0001:1: PREP_CMD: card is removed
[ 242.287751] mwifiex_sdio mmc2:0001:1: deleting the crypto keys
[ 242.287759] mwifiex_sdio mmc2:0001:1: PREP_CMD: card is removed
[ 242.287768] mwifiex_sdio mmc2:0001:1: deleting the crypto keys
[ 242.287778] mwifiex_sdio mmc2:0001:1: PREP_CMD: card is removed
[ 242.287785] mwifiex_sdio mmc2:0001:1: deleting the crypto keys
[ 242.287792] mwifiex_sdio mmc2:0001:1: PREP_CMD: card is removed
[ 242.287800] mwifiex_sdio mmc2:0001:1: deleting the crypto keys
[ 242.287821] mwifiex_sdio mmc2:0001:1: PREP_CMD: card is removed
[ 242.287829] mwifiex_sdio mmc2:0001:1: deleting the crypto keys
[ 242.287836] mwifiex_sdio mmc2:0001:1: PREP_CMD: card is removed
[ 242.287842] mwifiex_sdio mmc2:0001:1: deleting the crypto keys
[ 242.287850] mwifiex_sdio mmc2:0001:1: PREP_CMD: card is removed
[ 242.287857] mwifiex_sdio mmc2:0001:1: deleting the crypto keys
[ 242.287865] mwifiex_sdio mmc2:0001:1: PREP_CMD: card is removed
[ 242.287872] mwifiex_sdio mmc2:0001:1: deleting the crypto keys
[ 242.287881] mwifiex_sdio mmc2:0001:1: PREP_CMD: card is removed
[ 242.287887] mwifiex_sdio mmc2:0001:1: deleting the crypto keys
[ 242.287895] mwifiex_sdio mmc2:0001:1: PREP_CMD: card is removed
[ 242.287901] mwifiex_sdio mmc2:0001:1: deleting the crypto keys
[ 242.376935] audit: type=1130 audit(1564871066.966:67): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=_ msg='unit=systemd-rfkill comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
[ 242.387405] mmc_host mmc2: Bus speed (slot 0) = 50000000Hz (slot req 400000Hz, actual 396825HZ div = 63)
[ 242.457137] mmc_host mmc2: Bus speed (slot 0) = 50000000Hz (slot req 50000000Hz, actual 50000000HZ div = 0)
[ 242.725111] audit: type=1130 audit(1564871067.314:68): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=_ msg='unit=NetworkManager-dispatcher comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
[ 243.254866] mwifiex_sdio mmc2:0001:1: info: FW download over, size 533976 bytes
[ 243.467428] mwifiex_sdio mmc2:0001:1: WLAN FW is active
[ 247.390272] audit: type=1131 audit(1564871071.978:69): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=_ msg='unit=systemd-rfkill comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
[ 252.968095] audit: type=1131 audit(1564871077.558:70): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=_ msg='unit=NetworkManager-dispatcher comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
[ 253.619638] mwifiex_sdio mmc2:0001:1: mwifiex_cmd_timeout_func: Timeout cmd id = 0xa9, act = 0x0
[ 253.619653] mwifiex_sdio mmc2:0001:1: num_data_h2c_failure = 0
[ 253.619663] mwifiex_sdio mmc2:0001:1: num_cmd_h2c_failure = 0
[ 253.619671] mwifiex_sdio mmc2:0001:1: is_cmd_timedout = 1
[ 253.619678] mwifiex_sdio mmc2:0001:1: num_tx_timeout = 0
[ 253.619685] mwifiex_sdio mmc2:0001:1: last_cmd_index = 2
[ 253.619691] mwifiex_sdio mmc2:0001:1: last_cmd_id: 7f 00 a4 00 a9 00 a4 00 ce 00
[ 253.619699] mwifiex_sdio mmc2:0001:1: last_cmd_act: 00 00 00 00 00 00 00 00 00 a0
[ 253.619706] mwifiex_sdio mmc2:0001:1: last_cmd_resp_index = 4
[ 253.619712] mwifiex_sdio mmc2:0001:1: last_cmd_resp_id: 75 80 7f 80 16 80 a4 80 ce 80
[ 253.619718] mwifiex_sdio mmc2:0001:1: last_event_index = 3
[ 253.619724] mwifiex_sdio mmc2:0001:1: last_event: 1c 00 1c 00 0b 00 19 00 1c 00
[ 253.619731] mwifiex_sdio mmc2:0001:1: data_sent=1 cmd_sent=1
[ 253.619740] mwifiex_sdio mmc2:0001:1: ps_mode=0 ps_state=0
[ 253.619848] mwifiex_sdio mmc2:0001:1: info: _mwifiex_fw_dpc: unregister device
[ 255.378043] cyapa 1-0067: failed to read report data, (-6)
[ 261.310525] cyapa 1-0067: failed to read report data, (-6)
[ 270.344177] cyapa 1-0067: failed to read report data, (-6)
[ 299.703450] cyapa 1-0067: failed to read report data, (-6)

```