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    <body><span class="vcard"><a class="email" href="mailto:przanoni@gmail.com" title="Paulo Zanoni <przanoni@gmail.com>"> <span class="fn">Paulo Zanoni</span></a>
</span> changed
              <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - [HSW] It can't enter to OS due to i915 hang up when warm boot or cold boot sometimes"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=65652">bug 65652</a>
        <br>
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          <tr>
            <th>What</th>
            <th>Removed</th>
            <th>Added</th>
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         <tr>
           <td style="text-align:right;">CC</td>
           <td>
                
           </td>
           <td>przanoni@gmail.com
           </td>
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      <p>
        <div>
            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - [HSW] It can't enter to OS due to i915 hang up when warm boot or cold boot sometimes"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=65652#c6">Comment # 6</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - [HSW] It can't enter to OS due to i915 hang up when warm boot or cold boot sometimes"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=65652">bug 65652</a>
              from <span class="vcard"><a class="email" href="mailto:przanoni@gmail.com" title="Paulo Zanoni <przanoni@gmail.com>"> <span class="fn">Paulo Zanoni</span></a>
</span></b>
        <pre>Does this problem also happen with newer Kernels? Could you please test 3.10 or
3.11-rc3?


The first error message while booting is this one:

[    0.000000] ------------[ cut here ]------------
[    0.000000] WARNING: at drivers/iommu/dmar.c:483
warn_invalid_dmar+0x86/0xa0()
[    0.000000] Hardware name: SharkBay
[    0.000000] Your BIOS is broken; DMAR reported at address 0!
[    0.000000] BIOS vendor: LENOVO; Ver: 7CCN12WW; Product Version: INVALID     
[    0.000000] Modules linked in:
[    0.000000] Pid: 0, comm: swapper Not tainted 3.9.2-8.1.1.lp19.x86_64 #1
[    0.000000] Call Trace:
[    0.000000]  [<ffffffff8105ed6f>] warn_slowpath_common+0x7f/0xc0
[    0.000000]  [<ffffffff8105ee0f>] warn_slowpath_fmt_taint+0x3f/0x50
[    0.000000]  [<ffffffff81d19f51>] ? early_ioremap+0x13/0x15
[    0.000000]  [<ffffffff81d1160a>] ? __acpi_map_table+0x13/0x1a
[    0.000000]  [<ffffffff81594b26>] warn_invalid_dmar+0x86/0xa0
[    0.000000]  [<ffffffff81d42f89>] check_zero_address+0x57/0xf7
[    0.000000]  [<ffffffff81d43040>] detect_intel_iommu+0x17/0xb9
[    0.000000]  [<ffffffff81d0be50>] pci_iommu_alloc+0x4a/0x72
[    0.000000]  [<ffffffff81d19920>] mem_init+0x15/0x133
[    0.000000]  [<ffffffff81d03cc9>] start_kernel+0x1e3/0x3ff
[    0.000000]  [<ffffffff81d038e5>] ? repair_env_string+0x5e/0x5e
[    0.000000]  [<ffffffff81d035de>] x86_64_start_reservations+0x2a/0x2c
[    0.000000]  [<ffffffff81d036d1>] x86_64_start_kernel+0xf1/0x100
[    0.000000] ---[ end trace 363ca17e08482314 ]---

I wonder if this is related to the gfx problems later.</pre>
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