[Bug 102236] New: Pcie link speed is gen2 instead of gen3

[Bug 102236] New: Pcie link speed is gen2 instead of gen3

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=102236

            Bug ID: 102236
           Summary: Pcie link speed is gen2 instead of gen3
           Product: xorg
           Version: 7.7 (2012.06)
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
          Reporter: bloblo2017-PkbjNfxxIARBDgjK7y7TUQ@public.gmane.org
        QA Contact: xorg-team-go0+a7rfsptAfugRpC6u6w@public.gmane.org

Created attachment 133530
  --> https://bugs.freedesktop.org/attachment.cgi?id=133530&action=edit
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

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[Bug 102236] Pcie link speed is gen2 instead of gen3

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=102236

Martin Peres <martin.peres-GANU6spQydw@public.gmane.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |MOVED

--- Comment #1 from Martin Peres <martin.peres-GANU6spQydw@public.gmane.org> ---
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This bug has been migrated to freedesktop.org's GitLab instance and has been
closed from further activity.

You can subscribe and participate further through the new bug through this link
to our GitLab instance:
https://gitlab.freedesktop.org/xorg/driver/xf86-video-nouveau/issues/363.

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