References: bsc#1054986
With SLE15 and openSUSE 15 the content file has been removed from the media.
This file was used for SUSE distro version and arch detection. Now detection
must be done by parsing the media.1/products file for distro version and the
media.1/build file for the arch. The media.1/products and media.1/build files
have always been around so the entire _distroFromSUSEContent could be rewritten
(and simplified) to only check them. The products file format did change
between 11-SP4 and 12. SLE10 has no build file.

Index: virt-manager-1.4.2/virtinst/urlfetcher.py
===================================================================
--- virt-manager-1.4.2.orig/virtinst/urlfetcher.py
+++ virt-manager-1.4.2/virtinst/urlfetcher.py
@@ -392,7 +392,20 @@ def _distroFromSUSEContent(fetcher, arch
     try:
         cbuf = fetcher.acquireFileContent("content")
     except ValueError:
-        return None
+        try:
+            # If no content file, try media.1/products and media.1/build and create
+            # a cbuf with enough info for the content file parsing code below to work
+            pbuf = fetcher.acquireFileContent("media.1/products").rsplit('/', 1)[1].strip()
+            # Older style products format: SUSE-Linux-Enterprise-Server-11-SP4 11.4.4-1.109
+            # Newer style products format: SLES12-SP3 12.3-0
+            if pbuf.startswith('SLE'):
+                pbuf = pbuf.split(' ')[0]
+                pbuf = " ".join(re.split('(\d+)', pbuf, 1))
+            cbuf = "\nDISTRO ," + pbuf.replace('-', ' ')
+            bbuf = fetcher.acquireFileContent("media.1/build").split('-')
+            cbuf = cbuf + "\n" + " ".join(bbuf)
+        except ValueError:
+            return None
 
     distribution = None
     distro_version = None
@@ -465,7 +478,7 @@ def _distroFromSUSEContent(fetcher, arch
     dclass = GenericDistro
     if distribution:
         if re.match(".*SUSE Linux Enterprise Server*", distribution[1]) or \
-            re.match(".*SUSE SLES*", distribution[1]):
+            re.match(".*SUSE SLES*", distribution[1]) or re.match("SLES*", distribution[1]):
             dclass = SLESDistro
             if distro_version is None:
                 distro_version = _parse_sle_distribution(distribution)
@@ -481,7 +494,7 @@ def _distroFromSUSEContent(fetcher, arch
             dclass = CAASPDistro
             if distro_version is None:
                 distro_version = ['VERSION', distribution[1].strip().rsplit(' ')[6]]
-        elif re.match(".*openSUSE.*", distribution[1]):
+        elif re.match(".*openSUSE.*", distribution[1]) or re.match("openSUSE *", distribution[1]):
             dclass = OpensuseDistro
             if distro_version is None:
                 distro_version = ['VERSION', distribution[0].strip().rsplit(':')[4]]
@@ -1040,8 +1053,11 @@ class SuseDistro(Distro):
                 self._xen_kernel_paths = [("boot/%s/vmlinuz-xenpae" % self.arch,
                                             "boot/%s/initrd-xenpae" % self.arch)]
             else:
-                self._xen_kernel_paths = [("boot/%s/vmlinuz-xen" % self.arch,
-                                            "boot/%s/initrd-xen" % self.arch)]
+                self._xen_kernel_paths = [("boot/%s/loader/linux" % self.arch,
+                                                  "boot/%s/loader/initrd" % self.arch)]
+                # By appending this gets searched for first
+                self._xen_kernel_paths.append(("boot/%s/vmlinuz-xen" % self.arch,
+                                            "boot/%s/initrd-xen" % self.arch))
 
     def _variantFromVersion(self):
         distro_version = self.version_from_content[1].strip()