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Description of problem: When installing rhel6 beta 2 i386 on T400 laptop, it was frozen right after entering the stage 2 graphical mode. When this happened, ping did not response anymore, From 10.66.65.14 icmp_seq=205 Destination Host Unreachable Version-Release number of selected component (if applicable): kernel-2.6.32-37.el6 RHEL6 beta 2 How reproducible: always Steps to Reproduce: 1. install rhel6 beta 2 i386 via graphical mode on T400.
Remote logging seems not help, Jul 1 16:02:13 dhcp-65-14 rsyslogd: [origin software="rsyslogd" swVersion="4.6.2" x-pid="11611" x-info="http://www.rsyslog.com"] (re)start Jul 1 16:04:55 INFO created new libuser.conf at /tmp/libuser.AHOkuq with instPath="/mnt/sysimage" Jul 1 16:04:55 INFO anaconda called with cmdline = ['/usr/bin/anaconda', '--stage2', 'http://download.englab.nay.redhat.com/pub/rhel/nightly/RHEL6.0-20100629.n.1/6/Server/i386/os//images/install.img', '--syslog', '10.66.65.14', '--dlabel', '--graphical', '--selinux', '--lang', 'en_US.UTF-8', '--keymap', 'us', '--repo', 'http://download.englab.nay.redhat.com/pub/rhel/nightly/RHEL6.0-20100629.n.1/6/Server/i386/os/'] Jul 1 16:04:55 INFO Display mode = g Jul 1 16:04:55 INFO Default encoding = utf-8 Jul 1 16:04:56 INFO Started window manager, pid 747. Jul 1 16:04:56 WARNING '/usr/bin/metacity' specified as full path Jul 1 16:04:56 INFO Starting graphical installation. Jul 1 16:04:56 INFO Detected 1968M of memory Jul 1 16:04:56 INFO Swap attempt of 1968M to 3936M Jul 1 16:04:56 WARNING step installtype does not exist Jul 1 16:04:56 WARNING step confirminstall does not exist Jul 1 16:04:56 WARNING step complete does not exist Jul 1 16:04:57 INFO moving (1) to step welcome
Looks like X driver bug, as passed usefbx option can workaround it, although it was a very dark screen that seems can't adjust.
Pass intel_iommu=off to the kernel cmdline workaround the problem.
*** This bug has been marked as a duplicate of bug 602207 ***
I'm not sure this is a duplicate of bug 602207. The expected manifestation of that bug is that the system starts up just fine, but over a long period of time you start to see occasional DMA faults reported as GTT entries get corrupted. Working with an installed system is easier -- once it's installed, can you ensure that the IOMMU is enabled again, and show me the dmesg output as it starts up, and X starts?