Re: amdgpu doesn't start; [drm] failed to load ucode VCN0_RAM(0x3A)

Jonathan Gray writes: > On Mon, Mar 13, 2023 at 07:21:13PM -0600, bent...@openbsd.org wrote: > > Hi, > > > > Since the Linux 6.1.2 drm update, the Valve Steam Deck no longer starts > > amdgpu. Instead, these messages print, and X starts with wsfb instead. > > which firmware package do you have ins

Re: amdgpu doesn't start; [drm] failed to load ucode VCN0_RAM(0x3A)

On Tue, Mar 14, 2023 at 04:43:01AM -0600, bent...@openbsd.org wrote: > Jonathan Gray writes: > > On Mon, Mar 13, 2023 at 07:21:13PM -0600, bent...@openbsd.org wrote: > > > Hi, > > > > > > Since the Linux 6.1.2 drm update, the Valve Steam Deck no longer starts > > > amdgpu. Instead, these messages

resistance against single-even upsets

>Synopsis: can we resist agains bit flipping? >Category: system >Environment: System : OpenBSD 7.2 Details : OpenBSD 7.2 (GENERIC.MP) #2: Thu Nov 24 23:53:03 MST 2022 r...@syspatch-72-arm64.openbsd.org:/usr/src/sys/arch/arm64/compile/GENE

Re: resistance against single-even upsets

Good god, imagine this bit flip happened *anywhere else*, like in the page tables, or in the code or data or stack of chrome, or basically *anywhere* Shall we change them all? Shall we change the compiler to not allow checks like this? Shall we wait for a compiler diff from you? p...@delphinusd

Re: resistance against single-even upsets

This is a hardware issue. Hardware failure is best guarded against using redundant systems. Since random errors tend to lead to different outcomes, machines which agree on what they were told would be the ones which did not experience hardware failure. Personally, I'd recommend 5x redundancy for

Re: resistance against single-even upsets

On Tue, Mar 14, 2023 at 10:34:48AM -0600, Theo de Raadt wrote: > Good god, imagine this bit flip happened *anywhere else*, like in the > page tables, or in the code or data or stack of chrome, or basically > *anywhere* > > Shall we change them all? The example I gave was the last resort other tha

Re: resistance against single-even upsets

Peter J. Philipp wrote: > On Tue, Mar 14, 2023 at 10:34:48AM -0600, Theo de Raadt wrote: > > Good god, imagine this bit flip happened *anywhere else*, like in the > > page tables, or in the code or data or stack of chrome, or basically > > *anywhere* > > > > Shall we change them all? > > The ex

Re: resistance against single-even upsets

> On Mar 14, 2023, at 11:32 AM, p...@delphinusdns.org wrote: > >> Synopsis: can we resist agains bit flipping? >> Category: system >> Environment: > System : OpenBSD 7.2 > Details : OpenBSD 7.2 (GENERIC.MP) #2: Thu Nov 24 23:53:03 MST 2022 > r...@syspatch-72-arm64.openbsd.org:/usr/src/sys

stuck after attaching scsibus at softraid0

Hi all, I'm stuck trying to install a new system. After attachting a scsibus to softraid0, nothing happens .. the machine just sits there. Inserting a USB device results in the kernel finding and attaching that, but no "root at sd0a" or (for bsd.rd) "root at rd0a". Booting verbosely (setting ver

Re: resistance against single-even upsets

On Tue, Mar 14, 2023 at 01:17:00PM -0500, Scott Cheloha wrote: > > On Mar 14, 2023, at 11:32 AM, p...@delphinusdns.org wrote: > > > >> Synopsis: can we resist agains bit flipping? > >> Category: system > >> Environment: > > System : OpenBSD 7.2 > > Details : OpenBSD 7.2 (GENERIC.MP) #2: T

Re: amdgpu doesn't start; [drm] failed to load ucode VCN0_RAM(0x3A)

Jonathan Gray writes: > On Tue, Mar 14, 2023 at 04:43:01AM -0600, bent...@openbsd.org wrote: > > Jonathan Gray writes: > > > On Mon, Mar 13, 2023 at 07:21:13PM -0600, bent...@openbsd.org wrote: > > > > Hi, > > > > > > > > Since the Linux 6.1.2 drm update, the Valve Steam Deck no longer starts > >