1.Wi-Fi hotspot cannot be used normally

问题描述：
android P - Settings - Network & internet - Hotspot & tethering - Wi-Fi hotspot - turn on the switch.

it will switch off automatically after a few seconds.

Logcat has been uploaded & one error has been found.

12-26 08:48:19.442 291 291 W hwservicemanager: getTransport: Cannot find entry android.hardware.wifi.hostapd@1.0::IHostapd/default in either framework or device manifest.

QC解决流程：

Created By: Uwen Zhang (1/2/2020 9:59 PM)Dear Jianjun.it means doesn't change in the right config.xml.there are many config.xml defined config_wifi_softap_acs_supported.search your code to check which XML define its value as true.----------Created By: Duan Jianjun (1/2/2020 9:45 PM)i add log to print context.getResources().getBoolean(R.bool.config_wifi_softap_acs_supported)it always trueframeworks/base/core/res/res/values/config.xml:700: <bool translatable="false" name="config_wifi_softap_acs_supported">false</bool>vendor/qcom/proprietary/resource-overlay/common/Frameworks/res/values/config.xml:165: <bool translatable="false" name="config_wifi_softap_acs_supported">false</bool>i donnot know why ?can you find out other way to set it to true ?Created By: Duan Jianjun (1/2/2020 8:20 PM)it worked.i just setmEnableAcs = false;however, default value is<!-- Wifi driver supports Automatic channel selection (ACS) for softap --><bool translatable="false" name="config_wifi_softap_acs_supported">false</bool>i don't understand.pls check log.logcat_20200103.txt & dmesg_20200103.txt----------Created By: Uwen Zhang (1/2/2020 6:48 PM)Dear Customer,#1 Please share the wlan driver log to check why ACS fail.#2 the ACS flag config_wifi_softap_acs_supported already enabled from your 2 logs.set blew to verify/frameworks/opt/net/wifi/service/java/com/android/server/wifi/HostapdHal.java#104public HostapdHal(Context context) {// mEnableAcs = //context.getResources().getBoolean(R.bool.config_wifi_softap_acs_supported);mEnableAcs = false;mEnableIeee80211AC =context.getResources().getBoolean(R.bool.config_wifi_softap_ieee80211ac_supported);}The funtcion @vendor/qcom/opensource/softap/softap/sdk/2427 static int qsap_set_channel(s32 channel, s8 *tbuf, u32 *tlen)2428 {2429 u32 ulen;2430 s8 *pcfgval;2431 s8 schan[MAX_INT_STR+1];2432 s8 *pcfg = pconffile;24332434 ulen = *tlen;24352436 /* Do not worry about hw_mode if intention is to use ACS (channel=0) */2437 if (channel == 0)2438 goto end;----------Created By: Duan Jianjun (1/2/2020 5:51 PM)Hi QC,pls check log, ap still disable.1.WCNSS_qcom_cfg.inii set gApAutoChannelSelection=12.config_wifi_softap_acs_supported = true3.argv[3] (channel=0)i cannot find how to set channel.Created By: Uwen Zhang (1/2/2020 12:32 AM)01-02 02:21:57.010 E/QCSDK ( 6338): Cmd: acs_exclude_dfs Argument :001-02 02:21:57.010 D/QCSDK ( 6338): cmd=acs_exclude_dfs, Val:0, INI:001-02 02:21:57.013 D/QCSDK ( 6338): Adding a new line in hostapd.conf file: [acs_exclude_dfs=001-02 02:21:57.013 D/QCSDK ( 6338): ]01-02 02:21:57.014 D/QCSDK ( 6338): CMD OUTPUT [success]01-02 02:21:57.014 D/QCSDK ( 6338): len :701-02 02:21:57.014 D/QCSDK ( 6338):01-02 02:21:57.014 D/QCSDK ( 6338): argv[2] (set)01-02 02:21:57.014 D/QCSDK ( 6338): argv[3] (channel=0)01-02 02:21:57.014 D/QCSDK ( 6338): QCCMD data ()01-02 02:21:57.014 D/QCSDK ( 6338): CMD INPUT [ set channel=0][256]01-02 02:21:57.016 E/QCSDK ( 6338): Cmd: channel Argument :001-02 02:21:57.016 D/QCSDK ( 6338): cmd=channel, Val:0, INI:001-02 02:21:57.017 D/QCSDK ( 6338): Updated:channel=001-02 02:21:57.017 D/QCSDK ( 6338):----------Created By: Uwen Zhang (1/2/2020 12:23 AM)uwen010-58324315Created By: Uwen Zhang (1/2/2020 12:23 AM)have you enable config_wifi_softap_acs_supported ?from current log, it use ACS to set channel,but ACS nothing, so SAP failed----------Created By: Duan Jianjun (1/2/2020 12:19 AM)1. channel=6# Channel number (IEEE 802.11)# (default: 0, i.e., not set)# Please note that some drivers (e.g., madwifi) do not use this value from# hostapd and the channel will need to be configuration separately with# iwconfig.channel=6Now i modify it to 1.2 & 3 default value is the same as you provide.Is it necessary to verify the new version?----------Created By: Uwen Zhang (1/1/2020 11:20 PM)log show ACS failed.try blew.1.hostapd.conf channel =12.in WCNSS_qcom_cfg.ini , make below :gApAutoChannelSelection=03.config_wifi_softap_acs_supported = false<!-- Enable ACS (auto channel selection) for Wifi hotspot (SAP) --><bool translatable="false" name="config_wifi_softap_acs_supported">false</bool>if you want to use ACS channel, try blew.WCNSS_qcom_cfg.ini========================gApAutoChannelSelection=1----------Created By: Duan Jianjun (1/1/2020 9:23 PM)hotspot button can be switch on, but it cannot be found.pls check log.----------Created By: Uwen Zhang (1/1/2020 6:52 PM)Full----------Created By: Duan Jianjun (1/1/2020 6:32 PM)make systemimage or full version?----------Created By: Uwen Zhang (1/1/2020 6:01 PM)add it in your manifest.xml and re-test.----------Created By: Duan Jianjun (12/31/2019 12:23 AM)i got it in /device/qcom/msm8909go_p10pi/manifest.xmlandroid.hardware.wifi.hostapd can not be found.pls check attachment of manifesthow to modify?thanks----------Created By: Duan Jianjun (12/31/2019 12:18 AM)could you provider the full path of manifest.xml ?----------Created By: Uwen Zhang (12/30/2019 11:45 PM)Try add below codes into your current prj manifest.xml,<hal format="hidl"><name>android.hardware.wifi.hostapd</name><transport>hwbinder</transport><version>1.0</version><interface><name>IHostapd</name><instance>default</instance></interface></hal>----------Created By: Uwen Zhang (12/30/2019 11:44 PM)Dear customer,as the log mention, please check if android.hardware.wifi.hostapd@1.0::IHostapdin your binary or device manifest.

最终解决方案：

Index: device/qcom/common/device/overlay/frameworks/base/core/res/res/values/config.xml===================================================================--- device/qcom/common/device/overlay/frameworks/base/core/res/res/values/config.xml(版本 2968)+++ device/qcom/common/device/overlay/frameworks/base/core/res/res/values/config.xml(工作副本)@@ -123,7 +123,7 @@     <bool translatable="false" name="config_wifi_background_scan_support">true</bool>     <!-- Enable ACS (auto channel selection) for Wifi hotspot (SAP) -->-   <bool translatable="false" name="config_wifi_softap_acs_supported">true</bool>+   <bool translatable="false" name="config_wifi_softap_acs_supported">false</bool> <!-- @ modify for BUG # -->     <!-- Enable 802.11ac for Wifi hotspot (SAP) -->    <bool translatable="false" name="config_wifi_softap_ieee80211ac_supported">true</bool>Index: device/qcom/msm8909go_p10pi/manifest.xml===================================================================--- device/qcom/msm8909go_p10pi/manifest.xml(版本 2968)+++ device/qcom/msm8909go_p10pi/manifest.xml(工作副本)@@ -427,6 +427,24 @@         </interface>     </hal>     <hal format="hidl">+        <name>android.hardware.wifi.hostapd</name>+        <transport>hwbinder</transport>+        <version>1.0</version>+        <interface>+            <name>IHostapd</name>+            <instance>default</instance>+        </interface>+    </hal>+    <hal format="hidl">+        <name>vendor.qti.hardware.wifi.hostapd</name>+        <transport>hwbinder</transport>+        <version>1.0</version>+        <interface>+            <name>IHostapdVendor</name>+            <instance>default</instance>+        </interface>+    </hal>+    <hal format="hidl">         <name>vendor.qti.hardware.radio.ims</name>            <transport>hwbinder</transport>            <version>1.0</version>Index: packages/apps/Settings/res/xml/network_and_internet.xml===================================================================--- packages/apps/Settings/res/xml/network_and_internet.xml(版本 2968)+++ packages/apps/Settings/res/xml/network_and_internet.xml(工作副本)@@ -48,7 +48,7 @@             android:targetClass="com.android.phone.MobileNetworkSettings" />     </com.android.settingslib.RestrictedPreference> -    <!-- <com.android.settingslib.RestrictedPreference+    <com.android.settingslib.RestrictedPreference         android:fragment="com.android.settings.TetherSettings"         android:key="tether_settings"         android:title="@string/tether_settings_title_all"@@ -57,7 +57,7 @@         android:summary="@string/summary_placeholder"         settings:keywords="@string/keywords_hotspot_tethering"         settings:userRestriction="no_config_tethering"-        settings:useAdminDisabledSummary="true" /> -->+        settings:useAdminDisabledSummary="true" />      <!-- <com.android.settingslib.RestrictedPreference         android:key="manage_mobile_plan"Index: packages/apps/Settings/src/com/android/settings/network/NetworkDashboardFragment.java===================================================================--- packages/apps/Settings/src/com/android/settings/network/NetworkDashboardFragment.java(版本 2968)+++ packages/apps/Settings/src/com/android/settings/network/NetworkDashboardFragment.java(工作副本)@@ -107,7 +107,7 @@         final List<AbstractPreferenceController> controllers = new ArrayList<>();         controllers.add(mobileNetworkPreferenceController);         // @ modify for bug# {-        // controllers.add(new TetherPreferenceController(context, lifecycle));+        controllers.add(new TetherPreferenceController(context, lifecycle));         controllers.add(PreferenceController);         controllers.add(new ProxyPreferenceController(context));         //controllers.add(mobilePlanPreferenceController);Index: packages/apps/Settings/src/com/android/settings/network/TetherPreferenceController.java===================================================================--- packages/apps/Settings/src/com/android/settings/network/TetherPreferenceController.java(版本 2968)+++ packages/apps/Settings/src/com/android/settings/network/TetherPreferenceController.java(工作副本)@@ -117,12 +117,12 @@     @Override     public boolean isAvailable() {         //@ 20190616 -+ {-        /*final boolean isBlocked =+        final boolean isBlocked =                 (!mConnectivityManager.isTetheringSupported() && !mAdminDisallowedTetherConfig)                         || hasBaseUserRestriction(mContext, DISALLOW_CONFIG_TETHERING,                         UserHandle.myUserId());-        return !isBlocked;*/-        return false;+        return !isBlocked;+        //return false;         //@ 20190616 -+ }     }

2.No available channels on 5GHz band

问题描述：
switch ap band to 5GHz and open hotspot, it turn off automatically.

03-05 08:32:59.536 E/ApConfigUtil( 1069): No available channels on 5GHz band
03-05 08:32:59.536 E/ApConfigUtil( 1069): Failed to get available channel.
03-05 08:32:59.536 E/SoftApManager( 1069): Failed to update AP band and channel
03-05 08:32:59.537 V/WifiManager( 3577): SoftApCallbackProxy: onStateChanged: state=14, failureReason=1
03-05 08:32:59.539 E/WifiController( 1069): SoftAP start failed

QC解决流程：

Created By: Beibei Zhang (3/11/2020 11:23 PM)Dear customer你们默认国家码是00，然后用户侧又没有命令来改动（没有插卡什么的）那00的国家码注定用不了5G。一般客户默认国家码是US，然后手机插入哪个国家sim卡，国家码是会变的。回到本问题，你们在问题出现的时候直接输入以下命令，看看国家码是多少iw reg get然后用以下命令改一下国家码再看看能不能使用wpa_cli -i wlan0 DRIVER COUNTRY US-----------Created By: Beibei Zhang (3/10/2020 3:53 AM)country code 修改可以参考KBA -180706005928<regDomain>3</regDomain><countryCode><countryCode_value Index="0">67</countryCode_value><countryCode_value Index="1">78</countryCode_value><countryCode_value Index="2">73</countryCode_value></countryCode></defaultCountryTable>注意<regDomain>3</regDomain> 这个决定了DUT 的domain, 不管设置哪个国家代码，必须遵循这个domain=3(world ) 下的规则

参考：KBA-180706005928
country code决定是否能用5G，默认是00，不支持5G，在插卡后会改变country code。

android WIFI相关问题集合

1.Wi-Fi hotspot cannot be used normally

2.No available channels on 5GHz band

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