diff --git a/poky/meta/lib/oe/utils.py b/poky/meta/lib/oe/utils.py
index 13f4271..468c76f 100644
--- a/poky/meta/lib/oe/utils.py
+++ b/poky/meta/lib/oe/utils.py
@@ -249,8 +249,7 @@
     return trimmed
 
 def cpu_count(at_least=1):
-    import multiprocessing
-    cpus = multiprocessing.cpu_count()
+    cpus = len(os.sched_getaffinity(0))
     return max(cpus, at_least)
 
 def execute_pre_post_process(d, cmds):
diff --git a/poky/meta/lib/oeqa/core/target/qemu.py b/poky/meta/lib/oeqa/core/target/qemu.py
index 295e876..0f29414 100644
--- a/poky/meta/lib/oeqa/core/target/qemu.py
+++ b/poky/meta/lib/oeqa/core/target/qemu.py
@@ -12,6 +12,7 @@
 
 from .ssh import OESSHTarget
 from oeqa.utils.qemurunner import QemuRunner
+from oeqa.utils.dump import TargetDumper
 
 supported_fstypes = ['ext3', 'ext4', 'cpio.gz', 'wic']
 
@@ -42,6 +43,9 @@
                                  dump_host_cmds=dump_host_cmds, logger=logger,
                                  serial_ports=serial_ports, boot_patterns = boot_patterns, 
                                  use_ovmf=ovmf)
+        dump_target_cmds = kwargs.get("testimage_dump_target")
+        self.target_dumper = TargetDumper(dump_target_cmds, dump_dir, self.runner)
+        self.target_dumper.create_dir("qemu")
 
     def start(self, params=None, extra_bootparams=None, runqemuparams=''):
         if self.use_slirp and not self.server_ip:
diff --git a/poky/meta/lib/oeqa/core/target/ssh.py b/poky/meta/lib/oeqa/core/target/ssh.py
index aefb576..461448d 100644
--- a/poky/meta/lib/oeqa/core/target/ssh.py
+++ b/poky/meta/lib/oeqa/core/target/ssh.py
@@ -88,6 +88,8 @@
 
         status, output = self._run(sshCmd, processTimeout, True)
         self.logger.debug('Command: %s\nOutput:  %s\n' % (command, output))
+        if (status == 255) and (('No route to host') in output):
+            self.target_dumper.dump_target()
         return (status, output)
 
     def copyTo(self, localSrc, remoteDst):
diff --git a/poky/meta/lib/oeqa/runtime/cases/rtc.py b/poky/meta/lib/oeqa/runtime/cases/rtc.py
new file mode 100644
index 0000000..a34c101
--- /dev/null
+++ b/poky/meta/lib/oeqa/runtime/cases/rtc.py
@@ -0,0 +1,38 @@
+from oeqa.runtime.case import OERuntimeTestCase
+from oeqa.core.decorator.depends import OETestDepends
+from oeqa.runtime.decorator.package import OEHasPackage
+
+import re
+
+class RTCTest(OERuntimeTestCase):
+
+    def setUp(self):
+        if self.tc.td.get('VIRTUAL-RUNTIME_init_manager') == 'systemd':
+            self.logger.debug('Stopping systemd-timesyncd daemon')
+            self.target.run('systemctl disable --now systemd-timesyncd')
+
+    def tearDown(self):
+        if self.tc.td.get('VIRTUAL-RUNTIME_init_manager') == 'systemd':
+            self.logger.debug('Starting systemd-timesyncd daemon')
+            self.target.run('systemctl enable --now systemd-timesyncd')
+
+    @OETestDepends(['ssh.SSHTest.test_ssh'])
+    @OEHasPackage(['coreutils', 'busybox'])
+    def test_rtc(self):
+        (status, output) = self.target.run('hwclock -r')
+        self.assertEqual(status, 0, msg='Failed to get RTC time, output: %s' % output)
+        
+        (status, current_datetime) = self.target.run('date +"%m%d%H%M%Y"')
+        self.assertEqual(status, 0, msg='Failed to get system current date & time, output: %s' % current_datetime)
+
+        example_datetime = '062309452008'
+        (status, output) = self.target.run('date %s ; hwclock -w ; hwclock -r' % example_datetime)
+        check_hwclock = re.search('2008-06-23 09:45:..', output)
+        self.assertTrue(check_hwclock, msg='The RTC time was not set correctly, output: %s' % output)
+
+        (status, output) = self.target.run('date %s' % current_datetime)
+        self.assertEqual(status, 0, msg='Failed to reset system date & time, output: %s' % output)
+        
+        (status, output) = self.target.run('hwclock -w')
+        self.assertEqual(status, 0, msg='Failed to reset RTC time, output: %s' % output)
+        
diff --git a/poky/meta/lib/oeqa/sdkext/testsdk.py b/poky/meta/lib/oeqa/sdkext/testsdk.py
index c5c46df..ffd185e 100644
--- a/poky/meta/lib/oeqa/sdkext/testsdk.py
+++ b/poky/meta/lib/oeqa/sdkext/testsdk.py
@@ -99,6 +99,9 @@
             if not result.wasSuccessful():
                 fail = True
 
+            # Clean the workspace/sources to avoid `devtool add' failure because of non-empty source directory
+            bb.utils.remove(sdk_dir+'workspace/sources', True)
+
         if fail:
             bb.fatal("%s - FAILED - check the task log and the commands log" % pn)
 
diff --git a/poky/meta/lib/oeqa/selftest/cases/containerimage.py b/poky/meta/lib/oeqa/selftest/cases/containerimage.py
index c0998e3..4ad7f0e 100644
--- a/poky/meta/lib/oeqa/selftest/cases/containerimage.py
+++ b/poky/meta/lib/oeqa/selftest/cases/containerimage.py
@@ -42,6 +42,9 @@
 PACKAGE_CLASSES = "package_ipk"
 IMAGE_FEATURES = ""
 IMAGE_BUILDINFO_FILE = ""
+INIT_MANAGER = "sysvinit"
+IMAGE_INSTALL_remove = "ssh-pregen-hostkeys"
+
 """)
 
         bbvars = get_bb_vars(['bindir', 'sysconfdir', 'localstatedir',
diff --git a/poky/meta/lib/oeqa/selftest/cases/devtool.py b/poky/meta/lib/oeqa/selftest/cases/devtool.py
index b383ed9..4a791ff 100644
--- a/poky/meta/lib/oeqa/selftest/cases/devtool.py
+++ b/poky/meta/lib/oeqa/selftest/cases/devtool.py
@@ -56,7 +56,8 @@
                     if pth.startswith(canonical_layerpath):
                         if relpth.endswith('/'):
                             destdir = os.path.join(corecopydir, relpth)
-                            shutil.copytree(pth, destdir)
+                            # avoid race condition by not copying .pyc files YPBZ#13421,13803
+                            shutil.copytree(pth, destdir, ignore=ignore_patterns('*.pyc', '__pycache__'))
                         else:
                             destdir = os.path.join(corecopydir, os.path.dirname(relpth))
                             bb.utils.mkdirhier(destdir)
@@ -106,6 +107,13 @@
                         'under the build directory')
         self.append_config(self.sstate_conf)
 
+    def tearDown(self):
+        # devtools tests are heavy on IO and if bitbake can't write out its caches, we see timeouts.
+        # call sync around the tests to ensure the IO queue doesn't get too large, taking any IO
+        # hit here rather than in bitbake shutdown.
+        super().tearDown()
+        os.system("sync")
+
     def _check_src_repo(self, repo_dir):
         """Check srctree git repository"""
         self.assertTrue(os.path.isdir(os.path.join(repo_dir, '.git')),
diff --git a/poky/meta/lib/oeqa/selftest/cases/incompatible_lic.py b/poky/meta/lib/oeqa/selftest/cases/incompatible_lic.py
index 3eabd79..2a6382a 100644
--- a/poky/meta/lib/oeqa/selftest/cases/incompatible_lic.py
+++ b/poky/meta/lib/oeqa/selftest/cases/incompatible_lic.py
@@ -85,7 +85,7 @@
 class IncompatibleLicensePerImageTests(OESelftestTestCase):
     def default_config(self):
         return """
-IMAGE_INSTALL_append = "bash"
+IMAGE_INSTALL_append = " bash"
 INCOMPATIBLE_LICENSE_pn-core-image-minimal = "GPL-3.0 LGPL-3.0"
 """
 
diff --git a/poky/meta/lib/oeqa/utils/qemurunner.py b/poky/meta/lib/oeqa/utils/qemurunner.py
index 519aa9a..77ec939 100644
--- a/poky/meta/lib/oeqa/utils/qemurunner.py
+++ b/poky/meta/lib/oeqa/utils/qemurunner.py
@@ -393,7 +393,7 @@
 
         # If we are not able to login the tests can continue
         try:
-            (status, output) = self.run_serial(self.boot_patterns['send_login_user'], raw=True)
+            (status, output) = self.run_serial(self.boot_patterns['send_login_user'], raw=True, timeout=120)
             if re.search(self.boot_patterns['search_login_succeeded'], output):
                 self.logged = True
                 self.logger.debug("Logged as root in serial console")