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<base href="https://bugs.freedesktop.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Pcie link speed is gen2 instead of gen3"
href="https://bugs.freedesktop.org/show_bug.cgi?id=102236">102236</a>
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<th>Summary</th>
<td>Pcie link speed is gen2 instead of gen3
</td>
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<th>Product</th>
<td>xorg
</td>
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<th>Version</th>
<td>7.7 (2012.06)
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<th>Hardware</th>
<td>x86-64 (AMD64)
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<th>OS</th>
<td>Linux (All)
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>major
</td>
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<th>Priority</th>
<td>medium
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<th>Component</th>
<td>Driver/nouveau
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<th>Assignee</th>
<td>nouveau@lists.freedesktop.org
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<th>Reporter</th>
<td>bloblo2017@hotmail.com
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<th>QA Contact</th>
<td>xorg-team@lists.x.org
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<pre>Created <span class=""><a href="attachment.cgi?id=133530" name="attach_133530" title="lspci pstate 07 0f, vbios.rom nouveau, gtx770bios.rom from my gtx770 card">attachment 133530</a> <a href="attachment.cgi?id=133530&action=edit" title="lspci pstate 07 0f, vbios.rom nouveau, gtx770bios.rom from my gtx770 card">[details]</a></span>
lspci pstate 07 0f, vbios.rom nouveau, gtx770bios.rom from my gtx770 card
Hello,
Pcie link speed is gen2 instead of gen3
Kernel version: 4.10.0 (same situation with kern 4.9, 4.11, 4.13-rcx, 4.12 no
tested/remember)
My motherboard: x79 with 2 slot pci express 3 support
My graphic card: nvidia (msi) gtx 770 4 gb ddr5 oc edition twin frozr (2x fan)
Xorg: 7.7+19
Nouveau:
xserver-xorg-video-nouveau 1.0.13-3
libdrm-nouveau2 2.4.74-1
Dmesg (i compiled kernel with nouveau debug level 4 so very much info (clk, fan
etc), i pick just this:
nouveau 0000:02:00.0: pci: pcie max speed: 5.0GT/s
nouveau 0000:02:00.0: DRM: VRAM: 4096 MiB
nouveau 0000:02:00.0: DRM: GART: 1048576 MiB
(clock and pstate are fine and its work)
We are 2 situation:
1- All gtx 770 have this situation (with nouveau)
or/and
2- Nvidia disable using 8 gt/s by default (in forums nvidia: is for all cards
or only for x79 motherboard maybe ? but give option to enable pci3 with grub
and for windows give a small program exe to enable pcie3
(You can default 8gt/s support but you also add nouveau.config=pcie=3 something
as nvidia method is your choice)
In attachment:
- lspci with pstate 07
- lspci with pstate 0f
- vbios.rom from nouveau, located in same path of pstate files
- gtx770bios.rom, bios rom of my gtx 770 extracted with gpuz in windows
ps: in lspci link showing max 5gt/s, but with blacklist nouveau, is show 8 gt/s</pre>
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