Re: Xorg fails on ATI after update (mmio aperture)

2017-03-24 Thread John Paul Adrian Glaubitz
On 03/24/2017 06:13 PM, Riccardo Mottola wrote: > yes, that works even when using the stock kernel and I can stop disabling the > atyfb. That's great to hear! > Very good - we have a better solution than compiling different kernels! > Perhaps it > could be at least be mentioned or best pre-conf

Re: Xorg fails on ATI after update (mmio aperture)

2017-03-24 Thread Riccardo Mottola
Hi Cascardo, Thadeu Lima de Souza Cascardo wrote: Can you boot the default Debian kernel (the one with CONFIG_IO_STRICT_DEVMEM=y) with the following boot parameter and see if it works for you? iomem=relaxed If that works, you are open to some "security" issues, but no need to build a new kerne

Re: Xorg fails on ATI after update (mmio aperture)

2017-03-24 Thread Thadeu Lima de Souza Cascardo
On Fri, Mar 24, 2017 at 02:43:56PM +0100, Riccardo Mottola wrote: > Hi, > > John Paul Adrian Glaubitz wrote: > > Quoting: > > > > > >If this option is disabled, you allow userspace (root) access to all > > > >io-memory regardless of whether a driver is actively using that range. > > > >Accidental

Re: Xorg fails on ATI after update (mmio aperture)

2017-03-24 Thread Riccardo Mottola
Hi, John Paul Adrian Glaubitz wrote: Quoting: >If this option is disabled, you allow userspace (root) access to all >io-memory regardless of whether a driver is actively using that range. >Accidental access to this is obviously disastrous, but specific access >can be used by people debugging k

Re: Xorg fails on ATI after update (mmio aperture)

2017-03-24 Thread John Paul Adrian Glaubitz
On 03/24/2017 11:34 AM, John Paul Adrian Glaubitz wrote: > That's actually a difficult question. Looking at what the option does, > it's actually a security feature [1] and disabling it would take away > security for a lot of users. Sorry, forgot to provide the link: > http://cateee.net/lkddb/web

Re: Xorg fails on ATI after update (mmio aperture)

2017-03-24 Thread John Paul Adrian Glaubitz
Hi Riccardo! On 03/24/2017 10:30 AM, Riccardo Mottola wrote: > I used the debian supplied config except the IO strict devmem setting. > It took almost 2 days to build on the iBook using a SSD! :) > > X11 now works, so this is the proof. > Furthermore the description says that the setting is incom

Re: Xorg fails on ATI after update (mmio aperture)

2017-03-24 Thread Michel Dänzer
On 24/03/17 06:30 PM, Riccardo Mottola wrote: > Michel Dänzer wrote: >>> >[ 175.085] (EE) MACH64(0): Unable to map linear aperture. Invalid >>> >argument (22) >> This could still be due to CONFIG_IO_STRICT_DEVMEM, assuming offb >> registers the linear VRAM aperture. >> >> Note that I wouldn't cou

Re: Xorg fails on ATI after update (mmio aperture)

2017-03-24 Thread Riccardo Mottola
Hi, Michel Dänzer wrote: >[ 175.085] (EE) MACH64(0): Unable to map linear aperture. Invalid >argument (22) This could still be due to CONFIG_IO_STRICT_DEVMEM, assuming offb registers the linear VRAM aperture. Note that I wouldn't count on the kernel package maintainers honing a request to di