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                 <h1 id="troubleshooting">Troubleshooting</h1>
 <p>Welcome to the troubleshooting section of Bliss OS!</p>
 <p>If you believe you have found a bug, <a href="../taking-bug-reports/">please send us a bug report!</a></p>
 <h2 id="32-bit-processors-only-intel-atom-and-similar">32-bit processors only (Intel Atom and similar)</h2>
 <ol>
 <li>Install <a href="https://www.android-x86.org/">Android-x86 32-bit OS from here</a> (doesn't matter which version, as long as it's 32-bit)</li>
 <li>Update with Bliss OS 32-bit (current version is 11.9). After reboot you should be able to access the <code>grub</code> menu.</li>
 <li>In <code>grub</code> menu select "Debug mode"</li>
 <li>Run the following commands:
     <pre><code>mount -o remount, rw /mnt
 cd /mnt/grub
 nano menu.lst</code></pre></li>
 <li>Add <code>nomodeset</code> before every <code>SCR=/bliss...</code> line. For example, your configuration should look something like this:
     <pre><code>default=0
 timeout=6
 splashimage=/grub/android-x86.xpm.gz
 root (hd0,0)
 title Bliss-OS 11.7
     kernel /bliss-x86-11.7/kernel quiet root=/dev/ram0 androidboot.selinux=permissive androidboot.hardware=android_x86 vmalloc=192M androidboot.hardware=android_x86_64 nomodeset SRC=/bliss-x86-11.7
     initrd /bliss-x86-11.7/initrd.img
 title Bliss-OS 11.7 (Legacy modprobe mode)
     kernel /bliss-x86-11.7/kernel root=/dev/ram0 androidboot.selinux=permissive androidboot.hardware=android_x86 vmalloc=192M androidboot.hardware=android_x86_64 AUTO_LOAD=old nomodeset SRC=/bliss-x86-11.7
     initrd /bliss-x86-11.7/initrd.img
 title Bliss-OS 11.7 (Debug mode)
     kernel /bliss-x86-11.7/kernel root=/dev/ram0 androidboot.selinux=permissive androidboot.hardware=android_x86 vmalloc=192M DEBUG=2 androidboot.hardware=android_x86_64 nomodeset SRC=/bliss-x86-11.7
     initrd /bliss-x86-11.7/initrd.img
 title Bliss-OS 11.7 (Debug nomodeset)
     kernel /bliss-x86-11.7/kernel nomodeset root=/dev/ram0 androidboot.selinux=permissive androidboot.hardware=android_x86 vmalloc=192M DEBUG=2 androidboot.hardware=android_x86_64 nomodeset SRC=/bliss-x86-11.7
     initrd /bliss-x86-11.7/initrd.img
 title Bliss-OS 11.7 (Debug video=LVDS-1:d)
     kernel /bliss-x86-11.7/kernel video=LVDS-1:d root=/dev/ram0 androidboot.selinux=permissive androidboot.hardware=android_x86 vmalloc=192M DEBUG=2 nomodeset SRC=/bliss-x86-11.7
     initrd /bliss-x86-11.7/initrd.img</code></pre></li>
 <li>Press Ctrl+O to save, and then Ctrl+X to close.</li>
 <li>Type <code>reboot -f</code></li>
 </ol>
 <p>You should be finished! If all goes well you will boot into Bliss OS on your 32-bit machine.</p>
 <h2 id="grub2-kernel-parameters-and-options"><code>grub2</code> kernel parameters and options</h2>
 <p><strong>You will want to pay attention here!</strong> With Bliss OS on the PC, we tend to use quite a few command line options to get things working right. We've gathered a few of them here to explain them a little bit.</p>
 <p><a href="https://www.kernel.org/doc/Documentation/admin-guide/kernel-parameters.txt">A full list of available kernel parameters can be found here.</a></p>
 <p>Brief options overview:</p>
 <ul>
 <li><code>parameter</code>: Description</li>
 <li><code>root=</code>: Root filesystem.</li>
 <li><code>rootflags=</code>: Root filesystem mount options.</li>
 <li><code>initrd=</code>: Specify the location of the initial ramdisk.</li>
 <li><code>init=</code>: Run specified binary instead of <code>/sbin/init</code> (symlinked to <code>systemd</code> in Arch) as <code>init</code> process.</li>
 <li><code>init=/bin/sh</code>: Boot to shell.</li>
 <li><code>systemd.unit=</code>: Boot to a specified target.</li>
 <li><code>nomodeset</code>: Disable kernel mode setting (useful for fixing video driver panics) This will load mostly everything in software rendering/support mode. No hardware acceleration. Good for debugging. </li>
 <li><code>panic=</code>: Time before automatic reboot on kernel panic.</li>
 <li><code>debug</code>: Enable kernel debugging (events log level).</li>
 <li><code>mem=</code>: Force usage of a specific amount of memory to be used.</li>
 <li><code>maxcpus=</code>: Maximum number of processors that an SMP kernel will bring up during bootup.</li>
 <li><code>selinux=</code>: Disable or enable SELinux at boot time.</li>
 <li><code>netdev=</code>: Network devices parameters.</li>
 <li><code>video=&lt;videosetting&gt;</code>: Override framebuffer video defaults.</li>
 <li><code>sleep=1</code>: This will enable the system.prop value for <code>sleep.earlysuspend=1</code>, and on some machines, it enables the proper sleep state.</li>
 <li><code>acpi_sleep=s3_bios,s3_mode</code>: Sometimes needed for older machines to enter sleep mode properly</li>
 <li><code>SETUPWIZARD=0</code>: This command will skip SetupWizard on boot. (Only needs to be run once!)</li>
 <li><code>AUTO_LOAD=old</code>: This will load android-x86 variants using the old <code>modprobe</code> method to init devices. We sometimes use this to debug devices not starting. </li>
 <li><code>DEBUG=1 &amp; DEBUG=2</code>: These enable verbose console debugging, giving another command shell after loading kernel modules, but before Android <code>init</code></li>
 <li><code>vga=xxx &amp; video=</code>: These are the common video modes that you can boot into if it doesn't pick the best choice automagically. You can also use <code>video=</code> as resolution parameters: <code>video=LVDS-1:d video=1366x800</code>. <a href="https://groups.google.com/forum/#!msg/android-x86/jSF3RnADnqA/1sfYdGV_AQAJ">Learn more from our own Henri Koivuneva!</a></li>
 <li><code>HWACCELL=1</code>: This will disable graphics hardware acceleration, enabling rendering through Swiftshader. (Must use this if running headless)</li>
 <li><code>buildvariant=eng, user, userdebug</code>: This is the commandline parameter to run the current build as <code>eng</code>, <code>userdebug</code>, or <code>user</code> </li>
 <li><code>DPI=xxx</code>: This will manually set the DPI on init. Use this if things are too big/small for you.</li>
 <li><code>fbcon=variablename</code>: This is to configure framebuffer to use various options. Usually used to help fix video settings, etc. Even default rotation on some Atom tablets. Example: <code>video=efifb fbcon=rotate:1</code></li>
 <li><code>VULKAN=1</code>: Required for Vulkan-supported chipsets. This enables <code>hwcomposer</code> to work right with screenshots and other things.</li>
 </ul>
 <div class="admonition warning">
 <p class="admonition-title">Warning</p>
 <p>The following options can only be used on Android 9/10 builds released after 2020-02-02.</p>
 </div>
 <ul>
 <li><code>HWC=xxx</code>: Define <code>DRM_HWComposer</code> - options include <code>drm</code>, <code>drm_minigbm</code>, and <code>intel</code>.</li>
 <li><code>GRALLOC=xxx</code>: Define <code>DRM_Gralloc</code> - options include <code>gbm</code>, <code>minigbm</code>, and <code>intel</code>.</li>
 </ul>
 <p>As an example, here are a few of the boot options used in testing:</p>
 <pre><code>menuentry 'Bliss-x86 Test-Oreo' --class bliss {
     search --file --no-floppy --set=root /AndroidOS/android.boot
     linux /AndroidOS/kernel root=/dev/ram0 SRC=/AndroidOS androidboot.selinux=permissive androidboot.hardware=android_x86_64 buildvariant=eng quiet sleep.earlysuspend=2 DATA=
     initrd /AndroidOS/initrd.img
 }

 menuentry 'Bliss-x86 Test-Oreo AUTO_LOAD=old' --class bliss {
     search --file --no-floppy --set=root /AndroidOS/android.boot
     linux /AndroidOS/kernel root=/dev/ram0 SRC=/AndroidOS androidboot.selinux=permissive androidboot.hardware=android_x86_64 buildvariant=eng quiet DATA= AUTO_LOAD=old
     initrd /AndroidOS/initrd.img
 }

 menuentry 'Bliss-x86 Test-Oreo - SETUP_WIZARD=0' --class bliss {
     search --file --no-floppy --set=root /AndroidOS/android.boot
     linux /AndroidOS/kernel root=/dev/ram0 SRC=/AndroidOS androidboot.selinux=permissive buildvariant=eng SETUPWIZARD=0 quiet DATA=
     initrd /AndroidOS/initrd.img
 }

 menuentry 'Bliss-x86 Test-Oreo - debug=1' --class bliss {
     search --file --no-floppy --set=root /AndroidOS/android.boot
     linux /AndroidOS/kernel root=/dev/ram0 SRC=/AndroidOS androidboot.selinux=permissive androidboot.hardware=android_x86_64 buildvariant=eng SETUPWIZARD=0 quiet DATA= DEBUG=1
     initrd /AndroidOS/initrd.img
 }

 menuentry 'Bliss-x86 Test-Oreo - debug=2' --class bliss {
     search --file --no-floppy --set=root /AndroidOS/android.boot
     linux /AndroidOS/kernel root=/dev/ram0 SRC=/AndroidOS androidboot.selinux=permissive androidboot.hardware=android_x86_64 buildvariant=eng SETUPWIZARD=0 quiet DATA= DEBUG=2
     initrd /AndroidOS/initrd.img
 }
 </code></pre>


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	<h1 id="troubleshooting">Troubleshooting</h1>
	<p>Welcome to the troubleshooting section of Bliss OS!</p>
	<p>If you believe you have found a bug, <a href="../taking-bug-reports/">please send us a bug report!</a></p>
	<h2 id="32-bit-processors-only-intel-atom-and-similar">32-bit processors only (Intel Atom and similar)</h2>
	<ol>
	<li>Install <a href="https://www.android-x86.org/">Android-x86 32-bit OS from here</a> (doesn't matter which version, as long as it's 32-bit)</li>
	<li>Update with Bliss OS 32-bit (current version is 11.9). After reboot you should be able to access the <code>grub</code> menu.</li>
	<li>In <code>grub</code> menu select "Debug mode"</li>
	<li>Run the following commands:
	<pre><code>mount -o remount, rw /mnt
	cd /mnt/grub
	nano menu.lst</code></pre></li>
	<li>Add <code>nomodeset</code> before every <code>SCR=/bliss...</code> line. For example, your configuration should look something like this:
	<pre><code>default=0
	timeout=6
	splashimage=/grub/android-x86.xpm.gz
	root (hd0,0)
	title Bliss-OS 11.7
	kernel /bliss-x86-11.7/kernel quiet root=/dev/ram0 androidboot.selinux=permissive androidboot.hardware=android_x86 vmalloc=192M androidboot.hardware=android_x86_64 nomodeset SRC=/bliss-x86-11.7
	initrd /bliss-x86-11.7/initrd.img
	title Bliss-OS 11.7 (Legacy modprobe mode)
	kernel /bliss-x86-11.7/kernel root=/dev/ram0 androidboot.selinux=permissive androidboot.hardware=android_x86 vmalloc=192M androidboot.hardware=android_x86_64 AUTO_LOAD=old nomodeset SRC=/bliss-x86-11.7
	initrd /bliss-x86-11.7/initrd.img
	title Bliss-OS 11.7 (Debug mode)
	kernel /bliss-x86-11.7/kernel root=/dev/ram0 androidboot.selinux=permissive androidboot.hardware=android_x86 vmalloc=192M DEBUG=2 androidboot.hardware=android_x86_64 nomodeset SRC=/bliss-x86-11.7
	initrd /bliss-x86-11.7/initrd.img
	title Bliss-OS 11.7 (Debug nomodeset)
	kernel /bliss-x86-11.7/kernel nomodeset root=/dev/ram0 androidboot.selinux=permissive androidboot.hardware=android_x86 vmalloc=192M DEBUG=2 androidboot.hardware=android_x86_64 nomodeset SRC=/bliss-x86-11.7
	initrd /bliss-x86-11.7/initrd.img
	title Bliss-OS 11.7 (Debug video=LVDS-1:d)
	kernel /bliss-x86-11.7/kernel video=LVDS-1:d root=/dev/ram0 androidboot.selinux=permissive androidboot.hardware=android_x86 vmalloc=192M DEBUG=2 nomodeset SRC=/bliss-x86-11.7
	initrd /bliss-x86-11.7/initrd.img</code></pre></li>
	<li>Press Ctrl+O to save, and then Ctrl+X to close.</li>
	<li>Type <code>reboot -f</code></li>
	</ol>
	<p>You should be finished! If all goes well you will boot into Bliss OS on your 32-bit machine.</p>
	<h2 id="grub2-kernel-parameters-and-options"><code>grub2</code> kernel parameters and options</h2>
	<p><strong>You will want to pay attention here!</strong> With Bliss OS on the PC, we tend to use quite a few command line options to get things working right. We've gathered a few of them here to explain them a little bit.</p>
	<p><a href="https://www.kernel.org/doc/Documentation/admin-guide/kernel-parameters.txt">A full list of available kernel parameters can be found here.</a></p>
	<p>Brief options overview:</p>
	<ul>
	<li><code>parameter</code>: Description</li>
	<li><code>root=</code>: Root filesystem.</li>
	<li><code>rootflags=</code>: Root filesystem mount options.</li>
	<li><code>initrd=</code>: Specify the location of the initial ramdisk.</li>
	<li><code>init=</code>: Run specified binary instead of <code>/sbin/init</code> (symlinked to <code>systemd</code> in Arch) as <code>init</code> process.</li>
	<li><code>init=/bin/sh</code>: Boot to shell.</li>
	<li><code>systemd.unit=</code>: Boot to a specified target.</li>
	<li><code>nomodeset</code>: Disable kernel mode setting (useful for fixing video driver panics) This will load mostly everything in software rendering/support mode. No hardware acceleration. Good for debugging. </li>
	<li><code>panic=</code>: Time before automatic reboot on kernel panic.</li>
	<li><code>debug</code>: Enable kernel debugging (events log level).</li>
	<li><code>mem=</code>: Force usage of a specific amount of memory to be used.</li>
	<li><code>maxcpus=</code>: Maximum number of processors that an SMP kernel will bring up during bootup.</li>
	<li><code>selinux=</code>: Disable or enable SELinux at boot time.</li>
	<li><code>netdev=</code>: Network devices parameters.</li>
	<li><code>video=<videosetting></code>: Override framebuffer video defaults.</li>
	<li><code>sleep=1</code>: This will enable the system.prop value for <code>sleep.earlysuspend=1</code>, and on some machines, it enables the proper sleep state.</li>
	<li><code>acpi_sleep=s3_bios,s3_mode</code>: Sometimes needed for older machines to enter sleep mode properly</li>
	<li><code>SETUPWIZARD=0</code>: This command will skip SetupWizard on boot. (Only needs to be run once!)</li>
	<li><code>AUTO_LOAD=old</code>: This will load android-x86 variants using the old <code>modprobe</code> method to init devices. We sometimes use this to debug devices not starting. </li>
	<li><code>DEBUG=1 & DEBUG=2</code>: These enable verbose console debugging, giving another command shell after loading kernel modules, but before Android <code>init</code></li>
	<li><code>vga=xxx & video=</code>: These are the common video modes that you can boot into if it doesn't pick the best choice automagically. You can also use <code>video=</code> as resolution parameters: <code>video=LVDS-1:d video=1366x800</code>. <a href="https://groups.google.com/forum/#!msg/android-x86/jSF3RnADnqA/1sfYdGV_AQAJ">Learn more from our own Henri Koivuneva!</a></li>
	<li><code>HWACCELL=1</code>: This will disable graphics hardware acceleration, enabling rendering through Swiftshader. (Must use this if running headless)</li>
	<li><code>buildvariant=eng, user, userdebug</code>: This is the commandline parameter to run the current build as <code>eng</code>, <code>userdebug</code>, or <code>user</code> </li>
	<li><code>DPI=xxx</code>: This will manually set the DPI on init. Use this if things are too big/small for you.</li>
	<li><code>fbcon=variablename</code>: This is to configure framebuffer to use various options. Usually used to help fix video settings, etc. Even default rotation on some Atom tablets. Example: <code>video=efifb fbcon=rotate:1</code></li>
	<li><code>VULKAN=1</code>: Required for Vulkan-supported chipsets. This enables <code>hwcomposer</code> to work right with screenshots and other things.</li>
	</ul>
	<div class="admonition warning">
	<p class="admonition-title">Warning</p>
	<p>The following options can only be used on Android 9/10 builds released after 2020-02-02.</p>
	</div>
	<ul>
	<li><code>HWC=xxx</code>: Define <code>DRM_HWComposer</code> - options include <code>drm</code>, <code>drm_minigbm</code>, and <code>intel</code>.</li>
	<li><code>GRALLOC=xxx</code>: Define <code>DRM_Gralloc</code> - options include <code>gbm</code>, <code>minigbm</code>, and <code>intel</code>.</li>
	</ul>
	<p>As an example, here are a few of the boot options used in testing:</p>
	<pre><code>menuentry 'Bliss-x86 Test-Oreo' --class bliss {
	search --file --no-floppy --set=root /AndroidOS/android.boot
	linux /AndroidOS/kernel root=/dev/ram0 SRC=/AndroidOS androidboot.selinux=permissive androidboot.hardware=android_x86_64 buildvariant=eng quiet sleep.earlysuspend=2 DATA=
	initrd /AndroidOS/initrd.img
	}

	menuentry 'Bliss-x86 Test-Oreo AUTO_LOAD=old' --class bliss {
	search --file --no-floppy --set=root /AndroidOS/android.boot
	linux /AndroidOS/kernel root=/dev/ram0 SRC=/AndroidOS androidboot.selinux=permissive androidboot.hardware=android_x86_64 buildvariant=eng quiet DATA= AUTO_LOAD=old
	initrd /AndroidOS/initrd.img
	}

	menuentry 'Bliss-x86 Test-Oreo - SETUP_WIZARD=0' --class bliss {
	search --file --no-floppy --set=root /AndroidOS/android.boot
	linux /AndroidOS/kernel root=/dev/ram0 SRC=/AndroidOS androidboot.selinux=permissive buildvariant=eng SETUPWIZARD=0 quiet DATA=
	initrd /AndroidOS/initrd.img
	}

	menuentry 'Bliss-x86 Test-Oreo - debug=1' --class bliss {
	search --file --no-floppy --set=root /AndroidOS/android.boot
	linux /AndroidOS/kernel root=/dev/ram0 SRC=/AndroidOS androidboot.selinux=permissive androidboot.hardware=android_x86_64 buildvariant=eng SETUPWIZARD=0 quiet DATA= DEBUG=1
	initrd /AndroidOS/initrd.img
	}

	menuentry 'Bliss-x86 Test-Oreo - debug=2' --class bliss {
	search --file --no-floppy --set=root /AndroidOS/android.boot
	linux /AndroidOS/kernel root=/dev/ram0 SRC=/AndroidOS androidboot.selinux=permissive androidboot.hardware=android_x86_64 buildvariant=eng SETUPWIZARD=0 quiet DATA= DEBUG=2
	initrd /AndroidOS/initrd.img
	}
	</code></pre>









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