Comment # 7 on bug 1222156 from Togan Muftuoglu

(In reply to Roberto Canella from comment #6)
> (In reply to Togan Muftuoglu from comment #5)
> > I have the same issue and in the beginning I thought that was sth to do with
> > the kde6 upgrade but looks more likely to radeon in Mesa I you suggest.
> > 
> > kernel: show_signal_msg: 59 callbacks suppressed
> > Mar 31 12:20:56 desktop.dinamizm.com kernel: QSGRenderThread[1998]: segfault
> > at 40 ip 00007ff12e32b98d sp 00007ff0d8dff1d0 error 4 in
> > radeonsi_dri.so[7ff12dc91000+1476000] likely on CPU 1 >
> > Mar 31 12:20:56 desktop.dinamizm.com kernel: Code: 8b 6f 30 85 ed 0f 84 e5
> > 00 00 00 31 db 49 89 e5 eb 34 0f 1f 00 4d 03 77 38 49 8b 36 48 85 f6 74 0e
> > f0 83 2e 01 75 08 4c 89 e7 <41> ff 54 >
> > Mar 31 12:20:56 desktop.dinamizm.com sddm-helper[1885]: 
> > 
> > 
> > As a workaround I used the following cmdline options radeon.si_support=0
> > amdgpu.si_support=1
> > 
> > This enables at least the graphical environment but it is not the ideal
> > solution
> 
> Hi Togan,
> 
> I thank you for your work around, I just can't understand in which
> configuration file I have to set the "radeon.si_support" and
> "amdgpu.si_support" options
> 
> As you say it's not the best solution, but if it allows me to work it's fine.
> 
> TIA Roberto


Add these options to your GRUB_CMDLINE_LINUX_DEFAULT that you find in
/etc/default/grub and then run 'grub2-mkconfig -o /boot/grub2/grub.cfg'
afterwards to update /boot/grub2/grub.cfg.