Re: Hard kernel lock with gentoo-sources-6.18.18

Michael <[email protected]> Tue, 28 Apr 2026 18:26:54 +0100
Newsgroups	gmane.linux.gentoo.user
Message-ID	<12886703.O9o76ZdvQC@rogueboard>
On Thursday, 26 March 2026 08:38:53 British Summer Time you wrote:
> On Wednesday, 25 March 2026 23:31:29 Greenwich Mean Time D. Ben Knoble
> wrote:
> > On Wed, Mar 25, 2026 at 2:25 PM Michael <[email protected]>
> 
> wrote:
> > > On Tuesday, 24 March 2026 20:23:40 Greenwich Mean Time Tsukasa
> > > 
> > > Mcp_Reznor wrote:
> > > > From: Michael
> > > > Sent: Monday, March 23, 2026 7:24 PM
> > > > 
> > > > >I thought AMDGPU is stable code for many years, or at least it
> > > > >has
> > > > 
> > > > >been with my card:
> > > > Lol, pretty sure the amdgpu drivers are like 1/4th the size of
> > > > the
> > > > kernel, and they receive many many updates each kernel version,
> > > > albeit most of it will be for adding features or supporting the
> > > > latest and greatest.  With the shear scale of millions of lines
> > > > of
> > > > code, it's actually fairly common for numerous new bugs each
> > > > release.
> > > 
> > > I must have been lucky, but yet again I don't do any gaming.  I
> > > have
> > > not had such a glitch before over numerous desktops and laptops
> > > with Radeon cards, well since the good ol' fglrx days.  ;-)
> > > 
> > > >  I've been rocking amd cards for decades exclusively, skipping a
> > > > 
> > > > version here or there has always been worth it to me.  If you
> > > > check
> > > > out bugs.gentoo.org or use the kernels bug trackers, there will
> > > > probably already be a report on it, if not, feel free to add
> > > > one,
> > > > in
> > > > the past I've been very impressed by gentoo's team, but this
> > > > isn't
> > > > a
> > > > packaging or gentoo related bug most likely.  o7
> > > 
> > > Hmm ... you are right.  The kernel driver appears to have have had
> > > a
> > > turn for the worse :
> > > 
> > > https://community.frame.work/t/attn-critical-bugs-in-amdgpu-driver
> > > -i
> > > ncluded-with-kernel-6-18-x-6-19-x/79221
> > > 
> > > I tried 6.19.9 and it went sideways in the same manner.  :-(
> > 
> > Hm. I'm run 6.18.12 without issue right now, and my next reboot will
> > be for 6.18.18.
> > 
> > I have an AMD RYZEN AI MAX+ 395 w/ Radeon 8060S from Framework; I
> > suppose I might have misunderstood what we mean by "amdgpu" but
> > things seem smooth here.
> 
> I have two other older AMD A10 APUs (desktop & laptop) which work
> smoother than ever with the 6.18.18 and the amdgpu driver.  It's the
> Radeon RX Vega discrete GPU which has this problem.
> 
> The "amdgpu" refers to this kernel driver:
> 
> CONFIG_DRM_AMDGPU=y
> 
> Kernel 6.18.12 and prior have been faultless on all my PCs.  Kernels
> 6.18.18 and 6.19.9 both crash on the Vega.

It was reported on the BGO:

https://bugs.gentoo.org/971493

No fix yet.

PS. I overclocked the graphics card and now it does not lock up the PC, 
but the kernel still reports a crash in dmesg.
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