He talks about committing suicide by gas in the short story "The way the dead love" in the book "South of no north" page 149. I remember having read about another suicide attempt of his, also by gas. He turns on the jets and lies down on the bed, then loosing his nerve he leaves the bed and opens the windows. Just can't remember where I read it...
[...]
he turned on all the jets
without lighting them
and went to bed
some hours later a guy on his
way to room 309
lit a cigar in the
hall
and a sofa flew out the window
one wall shivered down like wet sand
a purple flame waved 40 feet high in the air
[...]
No that was John Martin who wrote about it.Didnt he also write about this suicide in "Slouching Toward Nirvana"?