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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [NV110] HP Pavilion 15 with Maxwell 950M fails to read BIOS (fix included)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=99487">99487</a>
</td>
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<tr>
<th>Summary</th>
<td>[NV110] HP Pavilion 15 with Maxwell 950M fails to read BIOS (fix included)
</td>
</tr>
<tr>
<th>Product</th>
<td>xorg
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
</tr>
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<th>OS</th>
<td>Linux (All)
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>major
</td>
</tr>
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<th>Priority</th>
<td>medium
</td>
</tr>
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<th>Component</th>
<td>Driver/nouveau
</td>
</tr>
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<th>Assignee</th>
<td>nouveau@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>nemesis@icequake.net
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>xorg-team@lists.x.org
</td>
</tr></table>
<p>
<div>
<pre>(Please tell me what information to attach and I will attach it)
HP Pavilion 15 (Skylake) with Maxwell 950M fails to load the whole BIOS. The
ACPI "fast" method is selected first, which partially loads the BIOS with a
score of 6, which prevents the ACPI "slow" method which actually works from
ever being attempted.
To work around this I changed the name of the ACPI methods to "ACPIF" and
"ACPIS" respectively, so that I could issue this parameter to target the slow
method directly:
nouveau.config=NvBios=ACPIS
Kernel log from trying to load nouveau normally of kernel 4.9.0:
Jan 21 17:47:33 achpee2 kernel: [ 1835.339060] ACPI Warning:
\_SB.PCI0.GFX0._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires
[Package] (20160831/nsarguments-95)
Jan 21 17:47:33 achpee2 kernel: [ 1835.339093] ACPI Warning:
\_SB.PCI0.PEG0.PEGP._DSM: Argument #4 type mismatch - Found [Buffer], ACPI
requires [Package] (20160831/nsarguments-95)
Jan 21 17:47:33 achpee2 kernel: [ 1835.339132] ACPI Warning:
\_SB.PCI0.PEG0.PEGP._DSM: Argument #4 type mismatch - Found [Buffer], ACPI
requires [Package] (20160831/nsarguments-95)
Jan 21 17:47:33 achpee2 kernel: [ 1835.339544] pci 0000:01:00.0: optimus
capabilities: enabled, status dynamic power,
Jan 21 17:47:33 achpee2 kernel: [ 1835.339547] VGA switcheroo: detected Optimus
DSM method \_SB_.PCI0.PEG0.PEGP handle
Jan 21 17:47:33 achpee2 kernel: [ 1835.339689] nouveau 0000:01:00.0: NVIDIA
GM107 (1171a0a2)
Jan 21 17:47:33 achpee2 kernel: [ 1835.339734] nouveau 0000:01:00.0: pci: MSI
enabled
Jan 21 17:47:33 achpee2 kernel: [ 1835.339736] nouveau 0000:01:00.0: bios:
trying PRAMIN...
Jan 21 17:47:33 achpee2 kernel: [ 1835.339748] nouveau 0000:01:00.0: bios: ...
not enabled
Jan 21 17:47:33 achpee2 kernel: [ 1835.339749] nouveau 0000:01:00.0: bios:
trying PROM...
Jan 21 17:47:33 achpee2 kernel: [ 1835.344944] nouveau 0000:01:00.0: bios:
00000000: ROM signature (0000) unknown
Jan 21 17:47:33 achpee2 kernel: [ 1835.344945] nouveau 0000:01:00.0: bios:
image 0 invalid
Jan 21 17:47:33 achpee2 kernel: [ 1835.344950] nouveau 0000:01:00.0: bios:
scored 0
Jan 21 17:47:33 achpee2 kernel: [ 1835.344951] nouveau 0000:01:00.0: bios:
trying ACPI...
Jan 21 17:47:33 achpee2 kernel: [ 1835.345417] nouveau 0000:01:00.0: bios:
00000000: type 00, 65536 bytes
Jan 21 17:47:33 achpee2 kernel: [ 1835.345904] nouveau 0000:01:00.0: bios:
00000000: checksum failed
Jan 21 17:47:33 achpee2 kernel: [ 1835.346372] nouveau 0000:01:00.0: bios:
00010000: type e0, 37376 bytes
Jan 21 17:47:33 achpee2 kernel: [ 1835.346830] nouveau 0000:01:00.0: bios:
00019200: ROM signature (0000) unknown
Jan 21 17:47:33 achpee2 kernel: [ 1835.346832] nouveau 0000:01:00.0: bios:
image 2 invalid
Jan 21 17:47:33 achpee2 kernel: [ 1835.346833] nouveau 0000:01:00.0: bios:
scored 6
Jan 21 17:47:33 achpee2 kernel: [ 1835.346834] nouveau 0000:01:00.0: bios:
using image from ACPI
Jan 21 17:47:33 achpee2 kernel: [ 1835.346946] nouveau 0000:01:00.0: bios: BIT
signature found
Jan 21 17:47:33 achpee2 kernel: [ 1835.346949] nouveau 0000:01:00.0: bios:
version 82.07.9b.00.d1
Jan 21 17:47:33 achpee2 kernel: [ 1835.346953] nouveau 0000:01:00.0: bios: DCB
contains no useful data
Jan 21 17:47:33 achpee2 kernel: [ 1835.346954] nouveau 0000:01:00.0: bios: DCB
contains no useful data
Jan 21 17:47:33 achpee2 kernel: [ 1835.346956] nouveau 0000:01:00.0: mxm: no
VBIOS data, nothing to do
Jan 21 17:47:33 achpee2 kernel: [ 1835.346970] nouveau 0000:01:00.0: bios: DCB
contains no useful data</pre>
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