linux-kernel - Re: AMD Drivers

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Date:   Thu, 25 Jul 2019 09:22:28 +0200
From:   "Enrico Weigelt, metux IT consult" <lkml@...ux.net>
To:     Gilberto Nunes <gilberto.nunes32@...il.com>,
        linux-kernel@...r.kernel.org,
        dri devel <dri-devel@...ts.freedesktop.org>
Subject: Re: AMD Drivers

On 24.07.19 16:17, Gilberto Nunes wrote:

Hi,

crossposting to dri-devel, as it smells like a problem w/ amdgpu driver.

> CPU - AMD A12-9720P RADEON R7, 12 COMPUTE CORES 4C+8G
> GPU - Wani [Radeon R5/R6/R7 Graphics] (amdgpu)
> Network Interface card:
> 01:00.1 Ethernet controller: Realtek Semiconductor Co., Ltd.
> RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 12)
> 
> When I install kernel 4.18.x or 5.x, the network doesn't work anymore...

What about other versions (eg. v4.19) ?
Which is the last working version ?

> I can loaded the modulo r8169 andr8168.
> I saw enp1s0f1 as well but there's no link at all!
> Even when I fixed the IP none link!
> I cannot ping the network gateway or any other IP inside LAN!
> Right now, I booted my laptop with kernel
> Linux version 5.2.2-050202-generic (kernel@...hleen) (gcc version
> 9.1.0 (Ubuntu 9.1.0-9ubuntu2)) #201907231250 SMP Tue Jul 23 12:53:21
> UTC 2019

Could you also try 5.3 ?

> The system boot slowly, and I have a SSD Samsung, which in kernel
> 4.15, boot quickly.
> And there's many errors in dmesg command, like you can see in this pastbin
> 
> https://paste.ubuntu.com/p/YhbjnzYYYh/

looks like something's wrong w/ reading gpu registers (more precisely
waiting for some changing), that's causing the soft lockup. (maybe too
big timeout ?)

> Oh! By the way, the network card r8169 are work wonderful!

Didn't you say (above) that it does not work ?
Or is it just an immediate fail and later comes back ?


--mtx


-- 
Enrico Weigelt, metux IT consult
Free software and Linux embedded engineering
info@...ux.net -- +49-151-27565287